2934833

Information

• Patent Grant
• 2934833

• References
• Source

• Patent Number

  2,934,833

• Date Filed

  Not available

• Date Issued

  Tuesday, May 3, 1960
  64 years ago

• CPC

  • G09C1/12 - comprising contact-bearing permutation discs

• US Classifications

  • 380 - Cryptography