TREA

John D. Sandkamp

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  • Minnetonka, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Joint and seal system for air transfer tubes
    • Patent number 5,474,337
    • Issue date Dec 12, 1995
    • Donaldson Company, Inc.
    • Larry R. Nepsund
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Advanced disposable air cleaner
    • Patent number 5,112,372
    • Issue date May 12, 1992
    • Donaldson Company, Inc.
    • Thomas A. Boeckermann
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS