TREA

Matthew F. Humphreys

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  • Bellefonte, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Coated synthetic resin board tiles
    • Patent number 5,985,397
    • Issue date Nov 16, 1999
    • Alvin E. Witt
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Coated synthetic resin board tiles
    • Patent number 5,976,689
    • Issue date Nov 2, 1999
    • Permagrain Products, Inc.
    • Alvin E. Witt
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Coated cement board tiles
    • Patent number 5,437,934
    • Issue date Aug 1, 1995
    • PermaGrain Products, Inc.
    • Alvin E. Witt
    • B32 - LAYERED PRODUCTS