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John S. Krejmas

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  • Greenfield, MA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Machine safety guard
    • Patent number 4,357,839
    • Issue date Nov 9, 1982
    • Rogers, Lunt & Bowlen Company
    • John S. Krejmas
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...