TREA

Trevor E. Wallace

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  • Bryanston, ZA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hydraulic rotary-percussive machines
    • Patent number 4,430,926
    • Issue date Feb 14, 1984
    • The Steel Engineering Company Limited
    • Trevor E. Wallace
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic percussive machines
    • Patent number 4,203,350
    • Issue date May 20, 1980
    • The Steel Engineering Company Limited
    • Trevor E. Wallace
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic percussive machines
    • Patent number 4,179,983
    • Issue date Dec 25, 1979
    • The Steel Engineering Company Limited
    • Trevor E. Wallace
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic percussive machines
    • Patent number 4,126,192
    • Issue date Nov 21, 1978
    • The Steel Engineering Company Limited
    • Trevor E. Wallace
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Telescopic rock drill mounting
    • Patent number 4,066,135
    • Issue date Jan 3, 1978
    • The Steel Engineering Company
    • Trevor Evelyn Wallace
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mounting for rock drills
    • Patent number 4,000,873
    • Issue date Jan 4, 1977
    • The Steel Engineering Company Limited
    • Trevor Evelyn Wallace
    • E21 - EARTH DRILLING MINING