TREA

Robert B. McConnell

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  • Urbana, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Abrading tool
    • Patent number 5,980,371
    • Issue date Nov 9, 1999
    • The Desmond-Stephan Mfg. Co.
    • Robert Bretney McConnell
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Dresser design
    • Patent number 4,237,853
    • Issue date Dec 9, 1980
    • The Desmond-Stephan Mfg. Company
    • Robert B. McConnell
    • B24 - GRINDING POLISHING