<ARTICLE> 5 <RESTATED> <MULTIPLIER> 1,000 <PERIOD-TYPE> 3-MOS <FISCAL-YEAR-END> DEC-31-1996 <PERIOD-END> MAR-31-1996 <CASH> 3,561 <SECURITIES> 21,473 <RECEIVABLES> 150,518 <ALLOWANCES> 0 <INVENTORY> 86,925 <CURRENT-ASSETS> 272,253 <PP&E> 374,875 <DEPRECIATION> 186,039 <TOTAL-ASSETS> 540,591 <CURRENT-LIABILITIES> 201,076 <BONDS> 0 <COMMON> 56,988 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <OTHER-SE> 153,773 <TOTAL-LIABILITY-AND-EQUITY> 540,591 <SALES> 156,476 <TOTAL-REVENUES> 156,476 <CGS> 61,946 <TOTAL-COSTS> 61,946 <OTHER-EXPENSES> 59,549 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 2,710 <INCOME-PRETAX> 32,984 <INCOME-TAX> 7,751 <INCOME-CONTINUING> 25,233 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 25,233 <EPS-PRIMARY> 0.57 <EPS-DILUTED> 0.56