TREA

G. Edwin Malzahn

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  • Perry, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Directional rod pusher
    • Patent number 5,070,948
    • Issue date Dec 10, 1991
    • The Charles Machine Works, Inc.
    • G. Edwin Malzahn
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Directional rod pusher
    • Patent number 4,945,999
    • Issue date Aug 7, 1990
    • The Charles Machine Works, Inc.
    • G. Edwin Malzahn
    • E21 - EARTH DRILLING MINING