TREA

James E. Yehl

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  • Boulder, CO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Combined electrostatic field generator and particulate collector
    • Patent number D366932
    • Issue date Feb 6, 1996
    • American Environmental Systems, Inc.
    • James E. Yehl
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Ionizer
    • Patent number D357311
    • Issue date Apr 11, 1995
    • American Environmental Systems, Inc.
    • James E. Yehl
    • D23 - Environmental heating and cooling