<Page> Exhibit 3.73 CERTIFICATE OF INCORPORATION OF STEELTON, INC. ***** FIRST. The name of the corporation is STEELTON, INC. SECOND. The address of its registered office In the State of Delaware is No. 100 West Tenth Street, in the City of Wilmington, County of New Castle. The name of its registered agent at such address is The Corporation Trust Company. THIRD. The nature of the business or purposes to be conducted or promoted is: To buy, acquire, lease and otherwise deal in, lands and interests in lands; to construct, erect, hold, improve, develop, maintain, operate, let, lease, mortgage, sell, and dispose of property of all kinds; to equip, furnish, and operate, apartment houses, hotels, motels, restaurants, office buildings, shopping centers, warehouses, buildings, and structures of all kinds. To engage in any lawful act or activity for which corporations may be organized under the General Corporation Law of Delaware. To acquire, and pay for in cash, stock or bonds of this corporation or otherwise, the good will, rights, assets and property, and to undertake or assume the whole or any part of the obligations or liabilities of any person, firm, association or corporation. <Page> To acquire, hold, use, sell, assign, lease, grant licenses in respect of, mortgage or otherwise dispose of letters patent of the United States or any foreign country, patent rights, licenses and privileges, inventions, improvements and processes, copyrights, trade-marks and trade names, relating to or useful in connection with any business of this corporation. To acquire by purchase, subscription or othherwise, and to receive, hold, own, guarantee, sell, assign, exchange, transfer, mortgage, pledge or otherwise dispose of or deal in and with any of the shares of the capital stock, or any voting trust certificates in respect of the shares of capital stock, scrip, warrants, rights, bonds, debentures, notes, trust receipts, and other securities, obligations, choses in action and evidences of indebtedness or interest issued or created by any corporations, joint stock companies, syndicates, associations, firms, trusts or persons, public or private, or by the government of the United States of America, or by any foreign government, or by any state, territory, province, municipality or other political subdivision or by any governmental agency, and as owner thereof to possess and exercise all the rights, powers and privileges of ownership, including the right to execute consents and vote thereon, and to do any and all acts and things necessary or advisable for the preservation, protection, improvement and enhancement in-value thereof. To borrow or raise moneys for any of the purposes of the corporation and, from time to time without limit as to amount, to draw, make, accept, endorse, execute and issue promisory notes, drafts, bills of exchange, warrants, bonds, debentures and other negotiable or non-negotiable instruments and evidences of indebtedness, and to secure the payment of any thereof and of the interest thereon by mortgage upon or pledge, 2 <Page> conveyance or assignment in trust of the whole or any part of the property of the corporation, whether at the time owned or thereafter acquired, and to sell, pledge or otherwise dispose of such bonds or other obligations of the corporation for its corporate purposes. To purchase, receive, take by grant, gift, devise, bequest or otherwise, lease, or otherwise acquire, own, hold, improve, employ, use and otherwise deal in and with real or personal property, or any interest therein, wherever situated, and to sell, convey, lease, exchange, transfer or otherwise dispose of, or mortgage or pledge, all or any of the corporation's property and assets, or any interest therein, wherever situated. In general, to possess and exercise all the powers and privileges granted by the General Corporation Law of Delaware or by any other law of Delaware or by this certificate of incorporation together with any powers incidental thereto, so far as such powers and privileges are necessary or convenient to the conduct, promotion or attainment of the business or purposes of the corporation. The business and purposes specified in the foregoing clauses shall, except where otherwise expressed, be in nowise limited or restricted by reference to, or inference from, the terms of any other clause in this certificate of incorporation, but the business and purposes specified in each or the foregoing clauses of this article shall be regarded as independent business and purposes. FOURTH. The total number of shares of stock which the corporation shall have authority to issue is one thousand (1,000) shares of stock, all of which shares shall be without par value. FIFTH. The name and mailing address of each incorporator is as follows: 3 <Page> NAME MAILING ADDRESS ---- --------------- B. J. Consono 100 West Tenth Street Wilmington, Delaware F. J. Obara, Jr. 100 West Tenth Street Wilmington, Delaware A. D. Grier 100 West Tenth Street Wilmington, Delaware SIXTH. The corporation is to have perpetual existence. SEVENTH. In furtherance and not in limitation of the powers conferred by statute, the board of directors is expressly authorized: To make, alter or repeal the by-laws of the corporation. To authorize and cause to be executed mortgages and liens upon the real and personal property of the corporation. To set apart out of any of the funds of the corporation available for dividends a reserve or reserves for any proper purpose and to abolish any such reserve in the manner in which it was created. By a majority of the whole board, to designate one or more committees, each committee to consist of two or more of the directors of the corporation. The board may designate one or more directors as alternate members of any committee, who may replace any absent or disqualified member at any meeting of the committee. Any such committee, to the extent provided in the resolution or in the by-laws of the corporation, shall have and may exercise the powers of the board of directors in the management of the business and affairs of the corporation, and may authorize the seal of the corporation to be affixed to all papers which may require it; provided, however, the by-laws may provide that in the absence or disqualification of any member of such committee or committees, the member or members thereof present at any meeting and not disqualified 4 <Page> from voting, whether or not he or they constitute a quorum, may unanimously appoint another member of the board of directors to act at the meeting in the place of any such absent or disqualified member. When and as authorized by the affirmative vote of the holders of a majority of the stock issued and outstanding having voting power given at a stockholders' meeting duly called upon such notice as is required by statute, or when authorized by the written consent of the holders of a majority of the voting stock issued and outstanding, to sell, lease or exchange all or substantially all of the property and assets of the corporation, including its good will and its corporate franchises, upon such terms and conditions and for such consideration, which may consist in whole or in part of money or property including shares of stock in, and/or other securities of, any other corporation or corporations, as its board of directors shall deem expedient and for the best interests of the corporation. EIGHT. Whenever a compromise or arrangement is proposed between this corporation and its creditors or any class of them and/or between this corporation and its stockholders or any class of them, any court of equitable jurisdiction within the State of Delaware may, on the application in a summary way of this corporation on of any creditor or stockholder thereof, or on the application of any receiver or receivers appointed for this corporation under the provisions of section 291 of Title 8 of the Delaware Code or on the application of trustees in dissolution or of any receiver or receivers appointed or this corporation under the provisions of section 279 of Title 8 of the Delaware Code order a meeting of the creditors or class of creditors, and/or of the stockholders or class of stockholders of this corporation, as the case may be, to be 5 <Page> summoned in such manner as the said court directs. If a majority in number representing three-fourths in value of the creditors or class of creditors, and/or of the stockholders or class of stockholders of this corporation, as the case may be, agree to any compromise or arrangement and to any reorganization of this corporation as consequence of such compromise or arrangement, the said compromise or arrangement and the said reorganization shall, if sanctioned by the court to which the said application has been made, be binding on all the creditors or class of creditors, and/or on all the stockholders or class of stockholders, of this corporation, as the case may be, and also on this corporation. NINTH. Meetings of stockholders may be held within or without the State of Delaware, as the by-laws may provide. The books of the corporation may be kept (subject to any provision contained in the statutes) outside the State of Delaware at such place or places as may be designated from time to time by the board of directors or in the by-laws of the corporation. Elections of directors need not be by written ballot unless the by-laws of the corporation shall so provide. TENTH. The corporation raserves the right to amend, alter, change or repeal any provision contained in this certificate of incorporation, in the manner now or hereafter prescribed by statute, and all rights conferred upon stockholders herein are granted subject to this reservation. 6 <Page> WE, THE UNDERSIGNED, being each of the incorporators hereinbfore named for the purpose of forming a corporation pursuant to the General Corporation Law of the State of Delaware, do make this certificate, hereby declaring and certifying that this is our act and deed and the facts herein stated are true, and accordingly have hereunto set our hands this 5th day of February, 1968. /s/ B. J. Consono ------------------------- B. J. Consono /s/ F. J. Obara, Jr. ------------------------- F. J. Obara, Jr. /s/ A. d. Grier ------------------------- A. D. Grier STATE OF DELAWARE ) ) ss: COUNTY OF NEW CASTLE ) BE IT REMEMBERED that on this 5th day of February, 1968, personally came before me, a Notary Public for the State of Delaware, B.J. Consono, F. J. Obara, Jr. and A.D. Grier, all of the parties to the foregoing certificate of incorporation, known to me personally to be such, and severally acknowledged the said certificate to be the act and deed of the signers respectively and that the facts stated therein are true. GIVEN under my hand and seal of office the day and year aforesaid. /s/ A. Dana Atwell ------------------------------- Notary Public [SEAL] 7 <Page> CERTIFICATE OF CHANGE OF LOCATION OF REGISTERED OFFICE AND OF REGISTERED AGENT It is hereby certified that: 1. The name of the corporation (hereinafter called the "corporation") is STEELTON, INC. 2. The registered office of the corporation within the State of Delaware is hereby changed to 229 South State Street, City of Dover 19901, County of Kent. 3. The registered agent of the corporation within the State of Delaware is hereby changed to The Prentice-Hall Corporation System, Inc., the business office of which is identical with the registered office of the corporation as hereby changed. 4. The corporation has authorized the changes hereinbefore set forth by resolution of its Board of Directors. Signed on February 18, 1977. /s/ William H. Klein -------------------------------- William H. Klein, Vice President Attest: /s/ Howard Shapiro - ------------------------------- Howard Shapiro, Asst. Secretary 8 <Page> CERTIFICATE OF CHANGE OF REGISTERED OFFICE AND OF REGISTERED AGENT Steelton, Inc. a corporation organized and existing under the General Corporation Law of the State of Delaware, DOES HEREBY CERTIFY THAT: The present registered agent of the corporation is The Prentice-Hall Corporation Systems, Inc., 32 Loockerman Sq., Suite L-100, Dover, DE 19901 and the present [?registered office of?] the corporation is in the county of Kent. The Board of Directors of Steelton, Inc. adopted the following resolution on the ___ day of May, 1994. Resolved, that the registered office of Steelton, Inc. in the state of Delaware be and hereby is changed to Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County of New Castle, and the authorization of tire present register agent of this company be and the same is hereby withdrawn, and THE CORPORATION TRUST COMPANY, be and is hereby constituted and appointed the registered agent of this corporation at the address of its registered office. IN WITNESS WHEREOF, Steelton, Inc. has caused this statement to be signed by Howard Shapiro, its Vice President, and attested by Irma Villarreal, his Secretary this 20th day of May, 1994. By: /s/ Howard Shapiro --------------------------------- Howard Shapiro,Vice President ATTEST: By: /s/ Irma Villarreal ------------------------------- Irma Villarreal, Secretary 9