TREA

Allan L. Liebrenz

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  • Excelsior, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filter and method for making a filter
    • Patent number 6,077,335
    • Issue date Jun 20, 2000
    • Donaldson Company, Inc.
    • Kirk A. Schneider
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Filter and method for making a filter
    • Patent number 5,997,618
    • Issue date Dec 7, 1999
    • Donaldson Company, Inc.
    • Kirk A. Schneider
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL