TREA

Douglas B. Arnold

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  • Portland, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Flextensional transducers
    • Patent number 5,345,428
    • Issue date Sep 6, 1994
    • The Secretary of State for Defence in Her Britannic Majesty's Government of t...
    • Douglas B. Arnold
    • B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
  • Information Patent Grant

    Sonar Transducers
    • Patent number 5,029,148
    • Issue date Jul 2, 1991
    • The Secretary of State for Defence in Her Britannic Majesty's Government of t...
    • Douglas B. Arnold
    • B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
  • Information Patent Grant

    Sonar transducers
    • Patent number 5,016,228
    • Issue date May 14, 1991
    • The Secretary of State for Defence in Her Britannic Majesty's Government of t...
    • Douglas B. Arnold
    • B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL