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AMSCO Engineered Products

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  • Rice Lake, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Frame assembly with a flush corner appearance
    • Patent number 6,643,988
    • Issue date Nov 11, 2003
    • AMSCO Engineered Products
    • Laurence P. Armstrong
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS