TREA

JENNMAR CORPORATION, A CORP. OF PA

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Organization

  • PITTSBURGH, PA, US
Organizations

Patents Applicationslast 30 patents

  • Information Patent Application

    Yieldable prop having a yield section
    • Publication number 20040223815
    • Publication date Nov 11, 2004
    • Jennmar Corpotation
    • John C. Stankus
    • E21 - EARTH DRILLING MINING