TREA

Ray H. Johnston

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  • Greenfield, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Breather assembly for a sealed container
    • Patent number 3,998,255
    • Issue date Dec 21, 1976
    • Plastronics, Inc.
    • Byron L. Mather
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Anti-reflux valve
    • Patent number 3,968,925
    • Issue date Jul 13, 1976
    • Plastronics, Inc.
    • Ray H. Johnston
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE