TREA

Keith E. Geren

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  • San Diego, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ping elongator-modulator for realistic echo synthesis
    • Patent number 5,062,083
    • Issue date Oct 29, 1991
    • The United States of America as represented by the Secretary of the Navy
    • Keith E. Geren
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Dopplerized echo repeater
    • Patent number 4,991,144
    • Issue date Feb 5, 1991
    • The United States of America as represented by the Secretary of the Navy
    • Keith E. Geren
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Wide band frequency shifter in variable amounts
    • Patent number 4,306,301
    • Issue date Dec 15, 1981
    • The United States of America as represented by the Secretary of the Navy
    • Keith E. Geren
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Sonar target simulator
    • Patent number 4,219,885
    • Issue date Aug 26, 1980
    • The United States of America as represented by the Secretary of the Navy
    • Claude C. Routh
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Multiple sonar masking and jamming countermeasure system
    • Patent number 4,214,313
    • Issue date Jul 22, 1980
    • The United States of America as represented by the Secretary of the Navy
    • Keith E. Geren
    • G01 - MEASURING TESTING