TREA

Donald R. Speckmann

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  • Mount Prospect, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Union bonnet valve
    • Patent number 4,149,699
    • Issue date Apr 17, 1979
    • Gould Inc.
    • Donald R. Speckmann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Metering valve
    • Patent number 4,129,284
    • Issue date Dec 12, 1978
    • Gould Inc.
    • John N. Scapes
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...