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Robert A. Walker

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  • Maple Grove, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Collapsible exercise device and method
    • Patent number 5,752,902
    • Issue date May 19, 1998
    • Robert A. Walker
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Air adjustable bed
    • Patent number 5,170,522
    • Issue date Dec 15, 1992
    • Select Comfort Corporation
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Bed foundation
    • Patent number 5,144,706
    • Issue date Sep 8, 1992
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Combination in line air-filter/air-oil separator/air-silencer
    • Patent number 5,140,957
    • Issue date Aug 25, 1992
    • Robert A. Walker
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Border for air bed
    • Patent number 4,991,244
    • Issue date Feb 12, 1991
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Air mattress
    • Patent number 4,908,895
    • Issue date Mar 20, 1990
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Air control system for air bed
    • Patent number 4,897,890
    • Issue date Feb 6, 1990
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Air control system for air bed
    • Patent number 4,890,344
    • Issue date Jan 2, 1990
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Air control system for air bed
    • Patent number 4,829,616
    • Issue date May 16, 1989
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Air mattress with audible pressure relief valve
    • Patent number 4,788,729
    • Issue date Dec 6, 1988
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Air mattress with filler check valve and cap therefor
    • Patent number 4,766,628
    • Issue date Aug 30, 1988
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Air mattress with pressure relief valve
    • Patent number 4,644,597
    • Issue date Feb 24, 1987
    • Dynatech, Inc.
    • Robert A. Walker
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...

Patents Applicationslast 30 patents

  • Information Patent Application

    PHONE CASE WITH WIND FILTER
    • Publication number 20140287802
    • Publication date Sep 25, 2014
    • American Builder, LLC
    • Robert A. Walker
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE