TREA

Helland Research & Engineering, Inc.

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  • Minneapolis, MN, US
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  • Information Patent Grant

    Torque release drive connector
    • Patent number 4,593,800
    • Issue date Jun 10, 1986
    • Helland Research & Engineering, Inc.
    • Joseph M. Ness
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

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