TREA

Helmut Poklekowski

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  • Lunen, 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

    Mine roof supports
    • Patent number 4,191,497
    • Issue date Mar 4, 1980
    • Gewerkschaft Eisenhutte Westfalia
    • Helmut Poklekowski
    • E21 - EARTH DRILLING MINING