TREA

Boart Longyear, Inc.

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  • Mississauga, CA
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  • Information Patent Grant

    Straight hole drilling system
    • Patent number 6,196,598
    • Issue date Mar 6, 2001
    • Boart Longyear, Inc.
    • James Jing Yao
    • E21 - EARTH DRILLING MINING

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