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Frederick W. Roloff

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  • Milwaukee, WI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Coil winding machine
    • Patent number 4,870,742
    • Issue date Oct 3, 1989
    • Cooper Power Systems, Inc.
    • Frederick W. Roloff
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...