TREA

Paul Friedrich

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  • Ventura, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Convertible wheelchair
    • Patent number 6,302,429
    • Issue date Oct 16, 2001
    • DA International, Ltd.
    • Paul Friedrich
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Method of wheelchair construction
    • Patent number 6,270,105
    • Issue date Aug 7, 2001
    • DA International, Ltd.
    • Paul Friedrich
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Rigid frame weldless wheelchair
    • Patent number 5,253,888
    • Issue date Oct 19, 1993
    • Da International, Ltd.
    • Paul Friedrich
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE