TREA

Donald W. Seiler

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  • Washington, DC, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Control circuits for electric coding machines
    • Patent number 6,175,625
    • Issue date Jan 16, 2001
    • The United States of America as represented by the National Security Agency
    • Laurance F. Safford
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Electro-mechanical cipher machine
    • Patent number 4,143,978
    • Issue date Mar 13, 1979
    • The United States of America as represented by the Secretary of the Navy
    • Bern Anderson
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS