TREA

Richard W. Lewitzke

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  • Franklin, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Casing tong assembly
    • Patent number 4,686,873
    • Issue date Aug 18, 1987
    • Becor Western Inc.
    • David M. Lang
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Expandable operator's cab
    • Patent number 4,605,257
    • Issue date Aug 12, 1986
    • Becor Western Inc.
    • David M. Lang
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS