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Robert M. Keener

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  • Ashland, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dual stage grinder pump
    • Patent number 10,816,008
    • Issue date Oct 27, 2020
    • Robert Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Sewage pump
    • Patent number 8,109,714
    • Issue date Feb 7, 2012
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Blade set for masserating effluent water in a sewage pump
    • Patent number 7,841,827
    • Issue date Nov 30, 2010
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Protective device for a controlling system of a sewage pump
    • Patent number 7,489,484
    • Issue date Feb 10, 2009
    • Robert M. Keener
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Sewage pump
    • Patent number 7,354,009
    • Issue date Apr 8, 2008
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Centrifugal sewage pumps with two impellers
    • Patent number 6,916,152
    • Issue date Jul 12, 2005
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    High current float switch
    • Patent number 4,540,891
    • Issue date Sep 10, 1985
    • R. W. Beckett Corporation
    • Robert M. Keener
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Float-type pump control switch
    • Patent number 4,084,073
    • Issue date Apr 11, 1978
    • Robert M. Keener
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    Apparatus for Controlling a Pump
    • Publication number 20110052414
    • Publication date Mar 3, 2011
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    FLOAT DEVICE FOR A SEWAGE PUMP
    • Publication number 20100129232
    • Publication date May 27, 2010
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Sewage Pump
    • Publication number 20090162219
    • Publication date Jun 25, 2009
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Blade Set for Masserating Effluent Water in a Sewage Pump
    • Publication number 20090087317
    • Publication date Apr 2, 2009
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Sewage Pump
    • Publication number 20090067992
    • Publication date Mar 12, 2009
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PROTECTIVE DEVICE FOR A CONTROLLING SYSTEM OF A SEWAGE PUMP
    • Publication number 20080219857
    • Publication date Sep 11, 2008
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PROTECTIVE DEVICE FOR A CONTROLLING SYSTEM OF A SEWAGE PUMP
    • Publication number 20080159876
    • Publication date Jul 3, 2008
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    PROTECTIVE DEVICE FOR A CONTROLLING SYSTEM OF A SEWAGE PUMP
    • Publication number 20080158743
    • Publication date Jul 3, 2008
    • Robert M. Keener
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    BLADE WHEEL FOR A SEWAGE PUMP
    • Publication number 20080095630
    • Publication date Apr 24, 2008
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    SEWAGE PUMP
    • Publication number 20070102547
    • Publication date May 10, 2007
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Centrifugal sewage pumps with two impellers
    • Publication number 20040253094
    • Publication date Dec 16, 2004
    • Robert M. Keener
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...