TREA

Warren G. Heidbrier

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  • Dubuque, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tamperproof rotary valve
    • Patent number 5,076,541
    • Issue date Dec 31, 1991
    • A. Y. McDonald Manufacturing Company
    • Joe L. Daghe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Tamperproof rotary valve
    • Patent number 4,984,767
    • Issue date Jan 15, 1991
    • A. Y. McDonald Mfg. Co.
    • Joe L. Daghe
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...