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  • G09C3/06
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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

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G09C3/06the connections being mechanical
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Patents Grantslast 30 patents

  • Information Patent Grant

    3349882
    • Patent number 3,349,882
    • Issue date Oct 31, 1967
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    3000486
    • Patent number 3,000,486
    • Issue date Sep 19, 1961
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2969135
    • Patent number 2,969,135
    • Issue date Jan 24, 1961
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2936058
    • Patent number 2,936,058
    • Issue date May 10, 1960
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2247170
    • Patent number 2,247,170
    • Issue date Jun 24, 1941
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2190649
    • Patent number 2,190,649
    • Issue date Feb 20, 1940
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2190650
    • Patent number 2,190,650
    • Issue date Feb 20, 1940
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2079130
    • Patent number 2,079,130
    • Issue date May 4, 1937
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2058776
    • Patent number 2,058,776
    • Issue date Oct 27, 1936
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    2049667
    • Patent number 2,049,667
    • Issue date Aug 4, 1936
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2046276
    • Patent number 2,046,276
    • Issue date Jun 30, 1936
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2044530
    • Patent number 2,044,530
    • Issue date Jun 16, 1936
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    2028508
    • Patent number 2,028,508
    • Issue date Jan 21, 1936
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    1604110
    • Patent number 1,604,110
    • Issue date Oct 19, 1926
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    1541183
    • Patent number 1,541,183
    • Issue date Jun 9, 1925
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    1406775
    • Patent number 1,406,775
    • Issue date Feb 14, 1922
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    1356277
    • Patent number 1,356,277
    • Issue date Oct 19, 1920
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    1315406
    • Patent number 1,315,406
    • Issue date Sep 9, 1919
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    1233715
    • Patent number 1,233,715
    • Issue date Jul 17, 1917
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    1201486
    • Patent number 1,201,486
    • Issue date Oct 17, 1916
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    1196338
    • Patent number 1,196,338
    • Issue date Aug 29, 1916
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    1149803
    • Patent number 1,149,803
    • Issue date Aug 10, 1915
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    1141055
    • Patent number 1,141,055
    • Issue date May 25, 1915
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    1138851
    • Patent number 1,138,851
    • Issue date May 11, 1915
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    1120784
    • Patent number 1,120,784
    • Issue date Dec 15, 1914
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    1085636
    • Patent number 1,085,636
    • Issue date Feb 3, 1914
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    1038556
    • Patent number 1,038,556
    • Issue date Sep 17, 1912
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    727915
    • Patent number 727,915
    • Issue date May 12, 1903
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    727213
    • Patent number 727,213
    • Issue date May 5, 1903
    • G07 - CHECKING-DEVICES
  • Information Patent Grant

    723566
    • Patent number 723,566
    • Issue date Mar 24, 1903
    • G07 - CHECKING-DEVICES

Patents Applicationslast 30 patents