1356277

Information

• Patent Grant
• 1356277

• References
• Source

• Patent Number

  1,356,277

• Date Filed

  Not available

• Date Issued

  Tuesday, October 19, 1920
  104 years ago

• CPC

  • G09C3/06 - the connections being mechanical

• US Classifications

  • 380 - Cryptography
  • 400 - Typewriting machines