TREA

Donald R. Armstrong

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  • Carmel, IN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Treadle control
    • Patent number 4,570,777
    • Issue date Feb 18, 1986
    • Hugh J. Baker & Company
    • Donald R. Armstrong
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...