1233715

Information

• Patent Grant
• 1233715

• References
• Source

• Patent Number

  1,233,715

• Date Filed

  Not available

• Date Issued

  Tuesday, July 17, 1917
  108 years ago

• CPC

  • G07B17/00733 - Cryptography or similar special procedures in a franking system
  • G09C3/06 - the connections being mechanical

• US Classifications

  • 380 - Cryptography