TREA

Donald L. Hadden

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  • Fountain Valley, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Central station alarm
    • Patent number RE32468
    • Issue date Aug 4, 1987
    • Baker Protective Services, Inc.
    • Tom W. Le Nay
    • 340 - Communications: electrical
  • Information Patent Grant

    Central station alarm
    • Patent number 4,228,424
    • Issue date Oct 14, 1980
    • Baker Protective Services, Incorporated
    • Tom W. Le Nay
    • G08 - SIGNALLING