TREA

John Corry

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  • Elrama, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Passive explosion barrier for mines
    • Patent number 4,284,144
    • Issue date Aug 18, 1981
    • The United States of America as represented by the Secretary of the Interior
    • Israel Liebman
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Passive explosion barrier
    • Patent number 3,960,217
    • Issue date Jun 1, 1976
    • The United States of America as represented by the Secretary of the Interior
    • Israel Liebman
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pressure sensitive explosion barrier
    • Patent number 3,958,644
    • Issue date May 25, 1976
    • The United States of America as represented by the Secretary of the Interior
    • Israel Liebman
    • E21 - EARTH DRILLING MINING