3479456

Information

• Patent Grant
• 3479456

• References
• Source

• Patent Number

  3,479,456

• Date Filed

  Not available

• Date Issued

  Tuesday, November 18, 1969
  55 years ago

• CPC

  • H04L9/38 - Encryption being effected by mechanical apparatus

• US Classifications

  • 380 - Cryptography
  • 178 - Telegraphy