TREA

William A. Williams

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  • Philadelphia, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Variable speed sheave
    • Patent number 4,149,425
    • Issue date Apr 17, 1979
    • T. B. Wood's Sons Company
    • William A. Williams
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Variable speed sheave assemblies and method of producing
    • Patent number 4,023,247
    • Issue date May 17, 1977
    • T. B. Wood's Sons Company
    • Lewis E. Baer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...