<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> DEC-31-1994 <PERIOD-END> SEP-30-1994 <CASH> 3,323 <SECURITIES> 81,024 <RECEIVABLES> 139,787 <ALLOWANCES> 0 <INVENTORY> 75,862 <CURRENT-ASSETS> 341,710 <PP&E> 373,371 <DEPRECIATION> 174,490 <TOTAL-ASSETS> 609,187 <CURRENT-LIABILITIES> 149,587 <BONDS> 0 <COMMON> 28,494 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 282,645 <TOTAL-LIABILITY-AND-EQUITY> 609,187 <SALES> 367,200 <TOTAL-REVENUES> 367,200 <CGS> 157,289 <TOTAL-COSTS> 157,289 <OTHER-EXPENSES> 143,117 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 5,489 <INCOME-PRETAX> 64,559 <INCOME-TAX> 14,526 <INCOME-CONTINUING> 50,033 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 55,033 <EPS-PRIMARY> 1.95 <EPS-DILUTED> 0