TREA

Walter M. Wallace

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  • Carlisle, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Washbox with conveyor discharge
    • Patent number 4,264,440
    • Issue date Apr 28, 1981
    • Norton-Harty Colliery Engineering Ltd.
    • Walter M. Wallace
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Stratifier discharge control
    • Patent number 4,248,702
    • Issue date Feb 3, 1981
    • Norton-Harty Colliery Engineering Limited
    • Walter M. Wallace
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Materials separation
    • Patent number 4,176,749
    • Issue date Dec 4, 1979
    • Nortn-Harty Colliery Engineering Limited
    • Walter M. Wallace
    • G01 - MEASURING TESTING