2402182

Information

• Patent Grant
• 2402182

• References
• Source

• Patent Number

  2,402,182

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1946
  78 years ago

• CPC

  • G09C1/12 - comprising contact-bearing permutation discs

• US Classifications

  • 380 - Cryptography