TREA

Henry Jamieson Riddoch

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  • Leslie, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gramophone equipment
    • Patent number 4,170,359
    • Issue date Oct 9, 1979
    • Pico Electronics Limited
    • Leslie A. Leech
    • G11 - INFORMATION STORAGE
  • Information Patent Grant

    Gramophone equipment
    • Patent number 4,114,893
    • Issue date Sep 19, 1978
    • Pico Electronics Limited
    • Leslie Alan Leach
    • G11 - INFORMATION STORAGE