TREA

Dennis E. Ward

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  • Richfield, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Safety filter element
    • Patent number D416308
    • Issue date Nov 9, 1999
    • Donaldson Company, Inc.
    • Dennis E. Ward
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Filter element
    • Patent number D414544
    • Issue date Sep 28, 1999
    • Donaldson Company, Inc.
    • Dennis E. Ward
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Cover for a housing for an air cleaner
    • Patent number D412568
    • Issue date Aug 3, 1999
    • Donaldson Company, Inc.
    • Dennis E. Ward
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Housing for an air cleaner
    • Patent number D412567
    • Issue date Aug 3, 1999
    • Donaldson Company, Inc.
    • Dennis E. Ward
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Filter element
    • Patent number D401306
    • Issue date Nov 17, 1998
    • Donaldson Company, Inc.
    • Dennis E. Ward
    • D23 - Environmental heating and cooling