Crossword Puzzle Office equipment giant

Clue: Office equipment giant

Giant in audio equipment (BOSE with 4 letters)
Athletic equipment giant that sponsors golfer Rory McIlroy (NIKE with 4 letters)
Police officer's equipment (BILLYCLUB with 9 letters)
Some office equipment (e.g. MACS with 4 letters)
Audio equipment giant (BOSE with 4 letters)
Bygone office equipment (TYPEWRITERS with 11 letters)
Office machine giant (XEROX with 5 letters)
Illinois-based equipment giant (DEERE with 5 letters)
Box-office giant (ROBERTREDFORD with 13 letters)
Cloned office equipment (IBMPCS with 6 letters)