<ARTICLE> 5 <MULTIPLIER> 1,000 <CURRENCY> US DOLLARS <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-START> JAN-01-1996 <PERIOD-END> SEP-30-1996 <EXCHANGE-RATE> 1 <CASH> 15,361 <SECURITIES> 0 <RECEIVABLES> 42,794 <ALLOWANCES> 89 <INVENTORY> 41,580 <CURRENT-ASSETS> 103,594 <PP&E> 79,805 <DEPRECIATION> 35,403 <TOTAL-ASSETS> 201,742 <CURRENT-LIABILITIES> 26,528 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 35,793 <OTHER-SE> 143,676 <TOTAL-LIABILITY-AND-EQUITY> 201,742 <SALES> 129,974 <TOTAL-REVENUES> 129,974 <CGS> 55,988 <TOTAL-COSTS> 55,988 <OTHER-EXPENSES> 50,180 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 0 <INCOME-PRETAX> 23,806 <INCOME-TAX> 6,390 <INCOME-CONTINUING> 17,416 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 17,416 <EPS-PRIMARY> 1.25 <EPS-DILUTED> 0