TREA

Albert J. Freeman

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  • San Francisco, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Seismic actuation system
    • Patent number 4,528,559
    • Issue date Jul 9, 1985
    • Albert J. Freeman
    • G08 - SIGNALLING
  • Information Patent Grant

    Seismic alarm system
    • Patent number 4,408,196
    • Issue date Oct 4, 1983
    • Albert J. Freeman
    • G08 - SIGNALLING
  • Information Patent Grant

    Fire retardant seal
    • Patent number 4,320,611
    • Issue date Mar 23, 1982
    • Albert J. Freeman
    • E04 - BUILDING