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James H. Clevenger

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  • De Graff, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

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    • Patent number 6,199,917
    • Issue date Mar 13, 2001
    • Holdren Brothers, Inc.
    • James H. Clevenger
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...