TREA

Quest Engineering, Ltd.

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  • Grand Rapids, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Self-closing door hinge
    • Patent number 5,272,789
    • Issue date Dec 28, 1993
    • Quest Engineering, Ltd.
    • Terry L. Mitchell
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
  • Information Patent Grant

    Strap type drawer interlock structure
    • Patent number 5,176,436
    • Issue date Jan 5, 1993
    • Quest Engineering, Ltd.
    • Terry L. Mitchell
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

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