EXHIBIT 3.6

BYLAWS

AMTECH AUTOMATED MANUFACTURING TECHNOLOGY

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AMTECH AUTOMATED MANUFACTURING TECHNOLOGY

APRIL 3, 1989 BYLAWS

AMENDMENTS

DATE OF
AMENDMENT SECTION EFFECT OF AMENDMENT

7/1/99 Article III, Section 2 The Board shall be composed of not less than one
Shareholder Action nor more than five Directors, the specific number
to be set by resolution of the Board or the
shareholders.

BYLAWS

AMTECH AUTOMATED MANUFACTURING TECHNOLOGY

ARTICLE I. OFFICES

The principal office of the Corporation in the State of Utah
shall be located in Salt Lake City, Utah. The Corporation may have such other
offices, either within or without the State of Utah, as the Board of Directors
may designate or as the business of the Corporation may require from time to
time.

ARTICLE II. SHAREHOLDERS

Section 1. Annual Meeting. The annual meeting of the
shareholders shall be held on Tuesday of the first week in the month of November
in each year, beginning with the year 1989, at the hour of Five o'clock, p.m.,
or at such other time on such other day within such month as shall be fixed by
the Board of Directors, for the purpose of electing directors and for the
transaction of such other business as may come before the meeting.

Section 2. Special Meetings. Special meetings of the
shareholders, for any purpose or purposes, unless otherwise prescribed by
statute, may be called by the president or by the Board of Directors, and shall
be called by the president at the request of the holders of not less than
one-tenth (1/10) of all outstanding shares of the Corporation entitled to vote
at the meeting.

Section 3. Place of Meeting. The Board of Directors may
designate any place, either within or without the State of Utah, as the place of
meeting for any annual meeting or for any special meeting called by the Board of
Directors.

Section 4. Notice of Meeting. Written notice stating the
place, day and hour of the meeting and, in case of a special meeting, the
purpose or purposes for which the meeting is called, shall, unless otherwise
prescribed by statute, be delivered not less than ten (10) nor more than fifty
(50) days before the date of the meeting, either personally or by mail, by or at
the direction of the president, or the secretary, or the officer or other
persons calling the meeting, to each shareholder of record entitled to vote at
such meeting. If mailed, such notice shall be deemed to be delivered when
deposited in the United States mail, addressed to the shareholder at his address
as it appears on the stock transfer books of the Corporation, with postage
thereon prepaid.

Section 5. Closing of Transfer Books or Fixing of Record Date.
For the purpose of determining shareholders entitled to notice of or to vote at
any meeting of shareholders or any adjournment thereof, or shareholders entitled
to receive payment of any dividend, or in order to make a determination of
shareholders for any other proper purpose, the Board of Directors of the
Corporation may provide that the stock transfer books shall be closed for a
stated period, not less than ten (10) days, but not to exceed, in any case,
fifty (50) days. In lieu of closing the stock transfer books, the Board of
Directors may fix in advance a date as the record date for any such
determination of shareholders, such date in any case to be not more than fifty
(50) days and, in case of a meeting of shareholders, not less than ten (10) days
prior to the date on which the particular action, requiring such determination
of shareholders, is to be taken.

Section 6. Voting Record. The officer or agent having charge
of the stock transfer books for shares of the Corporation shall make a complete
record of the shareholders entitled to vote at each meeting of shareholders or
any adjournment thereof.

Section 7. Quorum. A majority of the outstanding shares of the
Corporation entitled to vote, represented in person or by proxy, shall
constitute a quorum at a meeting of shareholders. If less than a majority of the
outstanding shares are represented at a meeting, a majority of the shares so
represented may adjourn the meeting from time to time without further notice.

Section 8. Proxies. At all meetings of shareholders, a
shareholder may vote in person or by proxy executed in writing by the
shareholder or by his duly authorized attorney in fact.

Section 9. Voting of Shares. Each outstanding share entitled
to vote shall be entitled to one (1) vote upon each matter submitted to a vote
at a meeting of shareholders.

Section 10. Informal Action by Shareholders. Any action
required to be taken at a meeting of the shareholders, or any action which may
be taken at a meeting of the shareholders, may be taken without a meeting if a
consent in writing, setting forth the action so taken, shall be signed by all of
the shareholders entitled to vote with respect to the subject matter thereof.

ARTICLE III. BOARD OF DIRECTORS

Section 1. General Powers. The business and affairs of the
Corporation shall be managed by its Board of Directors.

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Section 2. Number, Tenure and Qualifications. The initial
number of directors of the Corporation shall be three. The directors shall hold
office until the next annual meeting of shareholders and until their successors
shall have been elected and qualified. Directors need not be residents of the
State of Utah or shareholders of the Corporation.

Section 3. Regular Meetings. A regular meeting of the Board of
Directors shall be held without other notice than this Bylaw immediately after,
and at the same place as, the annual meeting of shareholders. The Board of
Directors may provide, by resolution, the time and place, either within or
without the State of Utah, for the holding of additional regular meetings
without other notice than such resolution.

Section 4. Special Meetings. Special meetings of the Board of
Directors may be called by or at the request of the president or any two
directors. The person or persons authorized to call special meetings of the
Board of Directors may the place for holding any special meeting of the Board of
Directors called by them, provided that all members of the board must consent to
the location of any meeting held outside of the State of Utah.

Section 5. Notice. Notice of any special meeting shall be
given at least two (2) days previously thereto by written notice delivered
personally or mailed to each director at his business address. If mailed, such
notice shall be deemed to be delivered 24 hours after being deposited in the
United States mail, so addressed, with postage thereon prepaid. Any director may
waive notice of any meeting. The attendance of a director at a meeting shall
constitute a waiver of notice of such meeting, except where a director attends a
meeting for the express purpose of objecting to the transaction of any business
because the meeting is not lawfully called or convened.

Section 6. Quorum. A majority of the number of directors fixed
by Section 2 of this Article III shall constitute a quorum for the transaction
of business at any meeting of the Board of Directors, but if less than such
majority is present at a meeting, a majority of the directors present may
adjourn the meeting from time to time without further notice.

Section 7. Manner of Acting. The act of a majority present at
a meeting shall be the act of the Board of Directors, provided a quorum is
present. Members of the Board of Directors may participate in any meeting of the
Board of Directors by means of conference telephone or other similar
communications equipment by which all persons participating in the meeting can
hear each other, and participation in a meeting under such circumstances shall
constitute presence in person at the meeting.

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Section 8. Action Without a Meeting. Any action required or
permitted to be taken by the Board of Directors at a meeting may be taken
without a meeting if a consent in writing, setting forth the action so taken,
shall be signed by all of the directors.

Section 9. Vacancies. Any vacancy occurring in the Board of
Directors may be filled by the affirmative vote of a majority of the remaining
directors though less than a quorum of the Board of Directors. A director
elected to fill a vacancy shall be elected for the unexpired term of his
predecessor in office. Any directorship to be filled by reason of an increase in
the number of directors may be filled by election by the Board of Directors for
a term of office continuing only until the next election of directors by the
shareholders.

Section 10. Compensation. By resolution of the Board of
Directors, the Directors may be paid their expenses, if any, of attendance at
each meeting of the Board of Directors, and may be paid a fixed sum for
attendance at each meeting of the Board of Directors or a stated salary as
Director. No such payment shall preclude any Director from serving the
Corporation in any other capacity and receiving compensation therefor.

ARTICLE IV. OFFICERS

Section 1. Number. The Officers of the Corporation shall be a
President, Secretary, and a Treasurer, and may include one or more
Vice-Presidents, each of whom shall be elected by a majority of the Board of
Directors. Such other officers and assistant officers as may be deemed necessary
may be elected or appointed by the Board of Directors. In its discretion, the
Board of Directors may leave unfilled for any such period as it may determine
any office except those of President and Secretary.

Section 2. Election and Term of Office. The officers of the
Corporation to be elected by the Board of Directors shall be elected annually by
the Board of Directors at the first meeting of the Board of Directors held after
each annual meeting of the shareholders. If the election of officers shall not
be held at such meeting, such election shall be held as soon thereafter as
convenient. Each officer shall hold office until his successor shall have been
duly elected and shall have qualified or until his death or until he shall
resign or shall have been removed in the manner hereinafter provided.

Section 3. Removal. Any officer may be removed by the Board of
Directors whenever in its judgment the best interests of the Corporation will be
served thereby, but such removal shall be without prejudice to the contract
rights, if any, of the person

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so removed. Election or appointment of an officer or agent shall not of itself
create contract rights.

Section 4. Vacancies. A vacancy in any office because of
death, resignation, removal, disqualification or otherwise, may be filled by the
Board of Directors for the unexpired portion of the term.

Section 5. President. The President shall be the principal
executive officer of the Corporation and, subject to the control of the Board of
Directors, shall in general supervise and control all of the business and
affairs of the Corporation. He shall, when present, preside at all meetings of
the shareholders and of the Board of Directors. He may sign, either alone or
with the secretary or any other proper officer of the Corporation authorized by
the Board of Directors, certificates for shares of the Corporation, any deeds,
mortgages, bonds, contracts, or other instruments which the Board of Directors
has authorized to be executed, and in general shall perform all duties incident
to the office of president and such other duties as may be prescribed by the
Board of Directors from time to time.

Section 6. Vice-President. In the absence of the president or
in the event of his death, inability or refusal to act, the vice-president shall
perform the duties of the president, and when so acting, shall have all the
powers of and be subject to all the restrictions upon the president. A
vice-president may sign, with the secretary, certificates for shares of the
Corporation; and shall perform such other duties as from time to time may be
assigned by the president or by the Board of Directors.

Section 7. Secretary. The secretary shall: (a) keep the
minutes of the proceedings of the shareholders and of the Board of Directors in
one or more books provided for that purpose; (b) see that all notices are duly
give in accordance with the provisions of these Bylaws or as required by law;
(c) be custodian of the corporate records and of the seal of the Corporation and
see that the seal of the Corporation is affixed to all documents the execution
of which on behalf of the Corporation under its seal is duly authorized; (d)
keep a register of the post office address of each shareholder; (e) sign with
the president, or the vice-president, certificates for shares of the
Corporation, the issuance of which shall have been authorized by resolution of
the Board of Directors; (f) have general charge of the stock transfer books of
the Corporation; and (g) in general perform all duties incident to the office of
secretary and such other duties as from time to time may be assigned by the
president or by the Board of Directors.

Section 8. Treasurer. The treasurer shall: (a) have charge and
custody of and be responsible for all funds and

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securities of the Corporation; (b) receive and give receipts for moneys due and
payable to the Corporation from any source whatsoever, and deposit all such
moneys in the name of the Corporation in such banks, trust companies or other
depositories as shall be selected in accordance with the provisions of Article V
of these Bylaws; and (c) in general perform all of the duties incident to the
office of treasurer and such other duties as from time to time may be assigned
to him by the president or by the Board of Directors.

Section 9. Salaries. The salaries of the officers shall be
fixed from time to time by the Board of Directors and no officer shall be
prevented from receiving such salary by reason of the fact that he is also a
director of the Corporation.

ARTICLE V. CERTIFICATES FOR SHARE AND THEIR TRANSFER

Section 1. Certificates for Shares. Certificates representing
shares of the Corporation shall be in such form as shall be determined by the
Board of Directors. Such certificate shall be signed by the president or
vice-president and by the secretary and sealed with the corporate seal or a
facsimile thereof if such seal has been adopted by the Board of Directors.

Section 2. Transfer of Shares. Transfer of shares of the
Corporation shall be made only on the stock transfer books of the Corporation by
the holder of record thereof or by his legal representative, who shall furnish
proper evidence of authority to transfer, or by his attorney thereunto
authorized by power of attorney duly executed and filed with the secretary of
the Corporation, and on surrender for cancellation of the certificate for such
shares. The person in whose name shares stand on the books of the Corporation
shall be deemed by the Corporation to be the owner thereof for all purposes.

ARTICLE VI. FISCAL YEAR

The fiscal year of the corporation shall begin on of the 1st
day of November of each year.

ARTICLE VII. DIVIDENDS

The Board of Directors may, from time to time, declare and the
Corporation may pay dividends on its outstanding shares in the manner, and upon
the terms and conditions provided by law and its Articles of Incorporation.

ARTICLE VIII. CORPORATE SEAL

The Board of Directors may provide a corporate seal which
shall be circular in form and shall have inscribed thereon

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the name of the Corporation and the state of incorporation and the words,
"Corporate Seal".

ARTICLE IX. WAIVER OF NOTICE

Whenever any notice is required to be given to any shareholder
or director of the Corporation under the provisions of these Bylaws or under the
provisions of the Utah Business Corporation Act, a waiver thereof in writing
signed by the person or persons entitled to such notice, whether before or after
the time stated therein, shall be deemed equivalent to the giving of such
notice.

ARTICLE X. AMENDMENTS

These bylaws may be altered, amended or repealed and new
Bylaws may be adopted by the Board of Directors or by the shareholders at any
regular or special meeting.

ARTICLE XI. INDEMNIFICATION

To the full extent permitted by law, the Corporation shall
indemnify any director or officer or former director or officer of the
Corporation, or any person who may have served at its request as a director or
officer of another corporation in which it owns shares or of which it is a
creditor, against expenses actually and reasonably incurred by him, in
connection with the defense of any action, suit or proceeding, civil or
criminal, in which he is made a party by reason of being or having been such
director or officer, except in relation to matters as to which he shall be
adjudged in such action, suit or proceeding to be liable for negligence or
misconduct in the performance of duty; and to make such other indemnification as
shall be authorized by the shareholders of the Corporation.

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