TREA

Steven Arthur Hartzell

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  • Greenville, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Filter and method for manufacturing filters
    • Patent number 5,698,059
    • Issue date Dec 16, 1997
    • AlliedSignal Inc.
    • Gerard Walter Bilski
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL