TREA

Robert E. Hefner

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  • Creve Couer, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Steering resistance device
    • Patent number 6,389,343
    • Issue date May 14, 2002
    • Caterpillar Inc.
    • Robert E. Hefner
    • B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • Information Patent Grant

    Powertrain performance assessment system
    • Patent number 5,109,696
    • Issue date May 5, 1992
    • Caterpillar Inc.
    • Irving Bright
    • B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents