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John R. Hollowell

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  • Dearborn, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Toy viewing apparatus assembly kit
    • Patent number 4,911,673
    • Issue date Mar 27, 1990
    • John R. Hollowell
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Service window
    • Patent number 4,702,037
    • Issue date Oct 27, 1987
    • John R. Hollowell
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Battery powered vacuum trash collector
    • Patent number 4,643,776
    • Issue date Feb 17, 1987
    • John R. Hollowell
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Battery powered vacuum trash collector
    • Patent number 4,535,501
    • Issue date Aug 20, 1985
    • John R. Hollowell
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES