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Roger R. Johnson

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  • Union Lake, MI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Push-pull caliper
    • Patent number 4,319,668
    • Issue date Mar 16, 1982
    • Eaton Corporation
    • Roger R. Johnson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...