TREA

Roy F. Zeigler

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  • Freeland, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Automatically closing modesty curtain
    • Patent number 4,667,353
    • Issue date May 26, 1987
    • Tri City Laboratory Specialists, Inc.
    • Warren L. Zeigler
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Fume hood sash operator
    • Patent number 4,502,375
    • Issue date Mar 5, 1985
    • Tri City Laboratory Specialists, Inc.
    • Alan L. Hignite
    • B08 - CLEANING