TREA

Ludwig K. Holtermann

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  • Old Saybrook, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Fluid metering pump
    • Patent number 5,284,425
    • Issue date Feb 8, 1994
    • The Lee Company
    • Ludwig K. Holtermann
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Check valve
    • Patent number 4,958,661
    • Issue date Sep 25, 1990
    • The Lee Company
    • Ludwig K. Holtermann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Diaphragm valve
    • Patent number 4,944,487
    • Issue date Jul 31, 1990
    • Lee Company
    • Ludwig K. Holtermann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Piezoelectric valve
    • Patent number 4,492,360
    • Issue date Jan 8, 1985
    • The Lee Company
    • Leighton Lee
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...