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Parker & Harper Mfg. Co., Inc.

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  • Worcester, MA, US
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Latching handle
    • Patent number 4,909,275
    • Issue date Mar 20, 1990
    • Parker & Harper Manufacturing Company, Inc.
    • Roger G. Massey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pilot valve assembly
    • Patent number 4,727,899
    • Issue date Mar 1, 1988
    • Parker & Harper Manufacturing Company, Inc.
    • Roger G. Massey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve handle with selectable stops
    • Patent number 4,559,966
    • Issue date Dec 24, 1985
    • The Parker & Harper Manufacturing Company
    • Roger G. Massey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Detachable handle for control devices
    • Patent number 4,193,579
    • Issue date Mar 18, 1980
    • Parker & Harper Mfg. Co., Inc.
    • Roger G. Massey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Power actuated valve
    • Patent number 4,046,350
    • Issue date Sep 6, 1977
    • The Parker & Harper Manufacturing Company, Inc.
    • Roger G. Massey
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...