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Havir Manufacturing Company

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  • St. Paul, MN, US
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  • Information Patent Grant

    Coiled flywheel assembly
    • Patent number 3,988,947
    • Issue date Nov 2, 1976
    • Havir Manufacturing Company
    • John Lenz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

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