TREA

Egon Wojaczek

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  • Hamm-Bockum-Hoevel, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Roof supports
    • Patent number 4,828,433
    • Issue date May 9, 1989
    • Gewerkschaft Eisenhutte Westfalia GmbH
    • Egon Wojaczek
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Roof supports
    • Patent number 4,815,898
    • Issue date Mar 28, 1989
    • Gewerkschaft Eisenhutte Westfalia GmbH
    • Egon Wojaczek
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Advance mechanism for a mine roof support unit
    • Patent number 4,379,661
    • Issue date Apr 12, 1983
    • Gewerkschaft Eisenhutte Westfalia
    • Egon Wojaczek
    • E21 - EARTH DRILLING MINING