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Bruce A. Clarkson

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  • Beverly, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fluid status detector
    • Patent number 4,855,714
    • Issue date Aug 8, 1989
    • Emhart Industries, Inc.
    • Bruce A. Clarkson
    • G08 - SIGNALLING
  • Information Patent Grant

    Electronic locking system and key therefor
    • Patent number 4,848,115
    • Issue date Jul 18, 1989
    • Emhart Industries, Inc.
    • Bruce A. Clarkson
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Fluid status detector
    • Patent number 4,835,521
    • Issue date May 30, 1989
    • Emhart Industries, Inc.
    • Raymond J. Andrejasich
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Fluid status detector
    • Patent number 4,831,360
    • Issue date May 16, 1989
    • Emhart Industries, Inc.
    • Bruce A. Clarkson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Electronic locking system and key therefor
    • Patent number 4,789,859
    • Issue date Dec 6, 1988
    • Emhart Industries, Inc.
    • Bruce A. Clarkson
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Electronic locking system and key therefor
    • Patent number 4,712,398
    • Issue date Dec 15, 1987
    • Emhart Industries, Inc.
    • Bruce A. Clarkson
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents