TREA

David A. Buttemer

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Patents Grantslast 30 patents

  • Information Patent Grant

    Detection system
    • Patent number 4,727,372
    • Issue date Feb 23, 1988
    • Electromatic (Proprietary) Limited
    • David A. Buttemer
    • G08 - SIGNALLING
  • Information Patent Grant

    Loop detector
    • Patent number 4,661,799
    • Issue date Apr 28, 1987
    • Electromatic (Proprietary) Limited
    • David A. Buttemer
    • G08 - SIGNALLING