TREA

Richard F. Wulff

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  • Long Lake, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sequential actuation skirt and brush floor scrubber
    • Patent number 6,249,926
    • Issue date Jun 26, 2001
    • Tennant Company
    • Richard F. Wulff
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Vacuum cleaner configuration
    • Patent number 6,115,880
    • Issue date Sep 12, 2000
    • Castex Incorporated
    • Richard F. Wulff
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Vacuum cleaner brush wrap geometry
    • Patent number 6,085,383
    • Issue date Jul 11, 2000
    • Castex Incorporated
    • Richard F. Wulff
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Upright floor cleaner
    • Patent number 6,079,080
    • Issue date Jun 27, 2000
    • Castex Incorporated
    • Bryce G. Rutter
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Carpet maintainer
    • Patent number 5,611,106
    • Issue date Mar 18, 1997
    • Castex Incorporated
    • Richard F. Wulff
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Motor and driver mount diaphragm burnisher
    • Patent number 5,608,939
    • Issue date Mar 11, 1997
    • Castex Incorporated
    • Steve Waldhauser
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Floor cleaner
    • Patent number 4,956,891
    • Issue date Sep 18, 1990
    • Castex Industries, Inc.
    • Richard F. Wulff
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Carpet brush attachment for a floor treating machine
    • Patent number 4,186,459
    • Issue date Feb 5, 1980
    • Advance Machine Company
    • Richard F. Wulff
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Mobile surface cleaning machine having side mounted squeegees
    • Patent number 4,158,901
    • Issue date Jun 26, 1979
    • Advance Machine Company
    • Richard F. Wulff
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Vacuum cleaner support apparatus
    • Patent number 3,930,630
    • Issue date Jan 6, 1976
    • Advance Machine Company
    • Richard F. Wulff
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Mobile floor sweeper
    • Patent number 3,930,277
    • Issue date Jan 6, 1976
    • Advance Machine Company
    • Richard F. Wulff
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES