TREA

involving removable or interchangeable coding members

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Industry

  • CPC
  • G09C3/10
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Parent Industries

GPHYSICS G09Cryptography, education, displays G09CCODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY G09C3/00Typewriters for ciphering or deciphering cryptographic text

Current Industry

G09C3/10involving removable or interchangeable coding members
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Teletype mixer apparatus for coding and decoding
    • Patent number 4,192,967
    • Issue date Mar 11, 1980
    • The United States of America as represented by the Secretary of the Air Force
    • Martin J. Prucha
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    3670104
    • Patent number 3,670,104
    • Issue date Jun 13, 1972
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    3201515
    • Patent number 3,201,515
    • Issue date Aug 17, 1965
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2690475
    • Patent number 2,690,475
    • Issue date Sep 28, 1954
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2425518
    • Patent number 2,425,518
    • Issue date Aug 12, 1947
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2406032
    • Patent number 2,406,032
    • Issue date Aug 20, 1946
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2401454
    • Patent number 2,401,454
    • Issue date Jun 4, 1946
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2151453
    • Patent number 2,151,453
    • Issue date Mar 21, 1939
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS