TREA

William R. Cobb

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  • Murrysville, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Toggle type temporary roof support for mining machinery
    • Patent number 4,460,294
    • Issue date Jul 17, 1984
    • Schroeder Brothers Corporation
    • William R. Cobb
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drill steel guide
    • Patent number 4,311,347
    • Issue date Jan 19, 1982
    • Schroeder Brothers Corporation
    • William R. Cobb
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Roof bolting device
    • Patent number 4,290,490
    • Issue date Sep 22, 1981
    • Schroeder Brothers Corporation
    • Henry P. Barthe
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Roof drilling and bolting apparatus
    • Patent number 4,256,186
    • Issue date Mar 17, 1981
    • Schroeder Brothers Corporation
    • Henry P. Barthe
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Vehicle mounted temporary roof support
    • Patent number 4,252,475
    • Issue date Feb 24, 1981
    • Schroeder Brothers Corporation
    • William R. Cobb
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Cab mounting for mining machine
    • Patent number 4,250,975
    • Issue date Feb 17, 1981
    • Schroeder Brothers Corporation
    • William R. Cobb
    • B60 - VEHICLES IN GENERAL