TREA

James E. Hammer

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  • University Place, WA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Concrete block mold
    • Patent number D663329
    • Issue date Jul 10, 2012
    • Westblock Systems, Inc.
    • James E. Hammer
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Retaining block
    • Patent number D650918
    • Issue date Dec 20, 2011
    • Westblock Systems, Inc.
    • James E. Hammer
    • D25 - Building units and construction elements