TREA

Donald R. Chivens

Follow

Person

  • Northridge, CA, US
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Pool cleaner hose
    • Patent number 4,753,256
    • Issue date Jun 28, 1988
    • Alopex Industries, Inc.
    • Donald R. Chivens
    • E04 - BUILDING
  • Information Patent Grant

    Pool scrubber device
    • Patent number 4,734,954
    • Issue date Apr 5, 1988
    • Paul Greskovics
    • A46 - BRUSHWARE
  • Information Patent Grant

    Fixture and method for making spiral wound hose
    • Patent number 4,714,508
    • Issue date Dec 22, 1987
    • Alopex Industries, Inc.
    • Donald R. Chivens
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Pool cleaner
    • Patent number 4,589,986
    • Issue date May 20, 1986
    • Alopex Industries, Inc.
    • Paul Greskovics
    • E04 - BUILDING
  • Information Patent Grant

    Pool cleaner
    • Patent number 4,558,479
    • Issue date Dec 17, 1985
    • Alopex Industries, Inc.
    • Paul Greskovics
    • E04 - BUILDING
  • Information Patent Grant

    Timed flow control valve assembly
    • Patent number 4,522,221
    • Issue date Jun 11, 1985
    • Autarkic Flow Controls
    • Donald R. Chivens
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Digital stylus force gauge
    • Patent number 4,395,920
    • Issue date Aug 2, 1983
    • Audio Dynamics Corporation
    • Stephen L. Kurtin
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Print element having flexible characters
    • Patent number 4,105,341
    • Issue date Aug 8, 1978
    • Lexitron Corporation
    • Donald R. Chivens
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS