TREA

Gregory J. Engel

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  • Plymouth, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Street sweeper recirculation flap
    • Patent number 7,520,017
    • Issue date Apr 21, 2009
    • Tennant
    • Michael S. Wilmo
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Conveyor lip for motorized street sweeper
    • Patent number 7,124,463
    • Issue date Oct 24, 2006
    • Tennant Company
    • Thomas P. Mathews
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Street sweeper with vacuumized dust control
    • Patent number 7,086,118
    • Issue date Aug 8, 2006
    • Tennant Company
    • Gregory J. Engel
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Street sweeper with dust control
    • Patent number 6,966,097
    • Issue date Nov 22, 2005
    • Tennant Company
    • Gregory J. Engel
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Filter system for mobile debris collection machine
    • Patent number 6,428,590
    • Issue date Aug 6, 2002
    • Tennant Company
    • Ronald W. Lehman
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Dual mode debris pickup machine
    • Patent number 6,389,641
    • Issue date May 21, 2002
    • Tennant Company
    • Steven L. Boomgaarden
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Dual mode debris pickup machine
    • Patent number 5,996,172
    • Issue date Dec 7, 1999
    • Tennant Company
    • Steven L. Boomgaarden
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Increased litter storage for vacuum trash collector
    • Patent number 5,996,173
    • Issue date Dec 7, 1999
    • Tennant Company
    • Gregory J. Engel
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Sweeper with dual seal filter
    • Patent number 5,647,093
    • Issue date Jul 15, 1997
    • Tennant Company
    • Gregory J. Engel
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Steerable side squeegees
    • Patent number 5,455,985
    • Issue date Oct 10, 1995
    • Tennant Company
    • Anthony J. Hamline
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Street sweeper with dust control
    • Publication number 20060053582
    • Publication date Mar 16, 2006
    • Gregory J. Engel
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Street sweeper with vacuumized dust control
    • Publication number 20060048332
    • Publication date Mar 9, 2006
    • Gregory J. Engel
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Street sweeper with vacuumized dust control
    • Publication number 20040143928
    • Publication date Jul 29, 2004
    • Tennant Company
    • Gregory J. Engel
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Street sweeper recirculation flap
    • Publication number 20040045582
    • Publication date Mar 11, 2004
    • Tennant
    • Michael S. Wilmo
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Motorized street sweeper
    • Publication number 20040045584
    • Publication date Mar 11, 2004
    • Tennant
    • Thomas P. Mathews
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    STREET SWEEPER WITH DUST CONTROL
    • Publication number 20040045123
    • Publication date Mar 11, 2004
    • Gregory J. Engel
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    Conveyor lip for motorized street sweeper
    • Publication number 20040045583
    • Publication date Mar 11, 2004
    • Tennant
    • Thomas P. Mathews
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Application

    STREET SWEPER WITH VACUUMIZED DUST CONTROL
    • Publication number 20040045111
    • Publication date Mar 11, 2004
    • Gregory J. Engel
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES