TREA

Douglas A. Groh

Follow

Person

  • Cincinnati, OH, US
People

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    MUD LEVEL SENSING SYSTEM
    • Publication number 20090032304
    • Publication date Feb 5, 2009
    • Ohmart/VEGA Corporation
    • Douglas A. Groh
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Silo Contents Measurement System
    • Publication number 20080079628
    • Publication date Apr 3, 2008
    • Ohmart/VEGA Corporation
    • Neil T. Wilkie
    • G01 - MEASURING TESTING