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Errol C. Armstrong

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  • Mountain View, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wheelchair drive mechanism
    • Patent number 7,261,309
    • Issue date Aug 28, 2007
    • Watwood, Inc.
    • Brian M. Watwood
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Wheelchair drive mechanism
    • Patent number 6,893,035
    • Issue date May 17, 2005
    • Brian M. Watwood
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Wheelchair drive assembly
    • Patent number 6,755,430
    • Issue date Jun 29, 2004
    • Brian M. Watwood
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Wheelchair driver and braking system
    • Patent number 6,007,082
    • Issue date Dec 28, 1999
    • Brian M. Watwood
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Wheelchair driver and braking system
    • Patent number 5,263,729
    • Issue date Nov 23, 1993
    • Brian M. Watwood
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Method for fabricating a solar energy collector assembly utilizing...
    • Patent number 4,598,450
    • Issue date Jul 8, 1986
    • Fafco, Inc.
    • James R. Thompson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Automatic soil plug loader and feeder
    • Patent number 4,443,151
    • Issue date Apr 17, 1984
    • Bud Antle, Inc.
    • Errol C. Armstrong
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Method and apparatus for making soil plugs
    • Patent number 4,422,990
    • Issue date Dec 27, 1983
    • Castle & Cooke Techniculture, Inc.
    • Errol C. Armstrong
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Dibble tube soil plug planter
    • Patent number 4,388,035
    • Issue date Jun 14, 1983
    • Bud Antle, Inc.
    • David W. Cayton
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Transplanting machine
    • Patent number 4,355,588
    • Issue date Oct 26, 1982
    • Bud Antle, Inc.
    • Errol C. Armstrong
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Dibble tube soil plug planter
    • Patent number 4,294,179
    • Issue date Oct 13, 1981
    • Bud Antle, Inc.
    • David W. Cayton
    • A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
  • Information Patent Grant

    Solar heat exchange panel and method of fabrication
    • Patent number 4,098,331
    • Issue date Jul 4, 1978
    • Fafco, Incorporated
    • Freeman A. Ford
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Solar heat exchange panel and method of fabrication
    • Patent number 3,934,323
    • Issue date Jan 27, 1976
    • Fafco, Incorporated
    • Freeman A. Ford
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    Wheelchair drive mechanism
    • Publication number 20050167942
    • Publication date Aug 4, 2005
    • Brian M. Watwood
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    Wheelchair drive mechanism
    • Publication number 20040104554
    • Publication date Jun 3, 2004
    • Brian M. Watwood
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE