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420820Ontario Limited, c.o.b. Preferred Engineering Inc.

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  • Vaughan, CA
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  • Information Patent Grant

    Parallel balance systems
    • Patent number 5,687,506
    • Issue date Nov 18, 1997
    • 420820Ontario Limited, c.o.b. Preferred Engineering Inc.
    • Bob Davies
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

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