TREA

Keith D. Marshall

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  • West Covina, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Waste receptacle systems and methods
    • Patent number 10,352,028
    • Issue date Jul 16, 2019
    • Acorn Engineering Company
    • Darryl Boeltl
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Stainless steel toilet resistant to corrosion by sea water
    • Patent number 6,687,922
    • Issue date Feb 10, 2004
    • Acorn Engineering Co.
    • Keith D. Marshall
    • B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
  • Information Patent Grant

    Lay down tub
    • Patent number D451986
    • Issue date Dec 11, 2001
    • Acorn Engineering Company
    • Keith Marshall
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Stainless steel toilet
    • Patent number D445884
    • Issue date Jul 31, 2001
    • Acorn Engineering Co.
    • Keith D. Marshall
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Stainless steel toilet
    • Patent number D437920
    • Issue date Feb 20, 2001
    • Acorn Engineering Co.
    • Keith D. Marshall
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    One-piece stainless steel pedestal wash basin
    • Patent number D433743
    • Issue date Nov 14, 2000
    • Acorn Engineering Co.
    • Keith D. Marshall
    • D23 - Environmental heating and cooling

Patents Applicationslast 30 patents

  • Information Patent Application

    WASTE RECEPTACLE SYSTEMS AND METHODS
    • Publication number 20160376779
    • Publication date Dec 29, 2016
    • Acorn Engineering Company
    • Darryl Boeltl
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Application

    Flushable toilet with flood control
    • Publication number 20050071914
    • Publication date Apr 7, 2005
    • Keith Marshall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...