TREA

Charles D. Hewitt

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ventilated splash goggle
    • Patent number 4,945,577
    • Issue date Aug 7, 1990
    • Encon Safety Products, Inc.
    • Charles D. Hewitt
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Ventilated splash goggles
    • Patent number D293504
    • Issue date Jan 5, 1988
    • Encon Manufacturing, Inc.
    • Paul B. Specht
    • D16 - Photography and optical equipment