3319000

Information

• Patent Grant
• 3319000

• References
• Source

• Patent Number

  3,319,000

• Date Filed

  Not available

• Date Issued

  Tuesday, May 9, 1967
  58 years ago

• CPC

  • G09C1/14 - involving removable or interchangeable coding numbers

• US Classifications

  • 380 - Cryptography