2690475

Information

• Patent Grant
• 2690475

• References
• Source

• Patent Number

  2,690,475

• Date Filed

  Not available

• Date Issued

  Tuesday, September 28, 1954
  70 years ago

• CPC

  • G09C3/10 - involving removable or interchangeable coding members
  • H04L9/12 - Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
  • H04L2209/12 - Details relating to cryptographic hardware or logic circuitry

• US Classifications

  • 380 - Cryptography