TREA

Ray W. Hinkel

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  • Stone Mountain, GA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Use of fibrous mat-faced gypsum board in shaft wall assemblies and...
    • Patent number 5,148,645
    • Issue date Sep 22, 1992
    • Georgia-Pacific Corporation
    • Charles W. Lehnert
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Fire door
    • Patent number 4,748,771
    • Issue date Jun 7, 1988
    • Georgia-Pacific Corporation
    • Charles W. Lehnert
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS