TREA

Junhui Liu

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  • St. Paul, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Air cleaner
    • Patent number 6,451,080
    • Issue date Sep 17, 2002
    • Donaldson Company, Inc.
    • Gary J. Rocklitz
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Air cleaner cover
    • Patent number D462117
    • Issue date Aug 27, 2002
    • Donaldson Company, Inc.
    • Steven Scott Gieseke
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Air cleaner
    • Patent number D450376
    • Issue date Nov 13, 2001
    • Donaldson Company, Inc.
    • Steven S. Gieseke
    • D23 - Environmental heating and cooling