<ARTICLE>       5
<LEGEND>
The schedule contains summary financial information extracted from quarterly 
financial statements for the nine months ended September 30, 1994 and is 
qualified in its entirety by reference to such financial statements.
       
                                                              
<FISCAL-YEAR-END>                                                      DEC-31-1994
<PERIOD-END>                                                           SEP-30-1994
<PERIOD-TYPE>                                                                9-MOS
<CASH>                                                                   8,376,336
<SECURITIES>                                                            43,690,526
<RECEIVABLES>                                                            7,280,680
<ALLOWANCES>                                                            (1,122,000)
<INVENTORY>                                                              3,933,557
<CURRENT-ASSETS>                                                        65,069,114
<PP&E>                                                                  14,745,400
<DEPRECIATION>                                                          (7,011,005)
<TOTAL-ASSETS>                                                          82,908,879
<CURRENT-LIABILITIES>                                                   10,729,411
<BONDS>                                                                          0
<PREFERRED-MANDATORY>                                                            0 
<PREFERRED>                                                                      0
<COMMON>                                                                   584,724
<OTHER-SE>                                                              55,848,037
<TOTAL-LIABILITY-AND-EQUITY>                                            82,908,879
<SALES>                                                                 39,232,721
<TOTAL-REVENUES>                                                        44,496,473
<CGS>                                                                   15,900,143
<TOTAL-COSTS>                                                           11,756,617
<OTHER-EXPENSES>                                                         2,791,370
<LOSS-PROVISION>                                                                 0
<INTEREST-EXPENSE>                                                          20,320
<INCOME-PRETAX>                                                         14,028,023
<INCOME-TAX>                                                             5,160,000
<INCOME-CONTINUING>                                                      8,868,023
<DISCONTINUED>                                                                   0
<EXTRAORDINARY>                                                                  0
<CHANGES>                                                                        0
<NET-INCOME>                                                             8,868,023
<EPS-PRIMARY>                                                                 1.97
<EPS-DILUTED>                                                                    0