1157040

Information

• Patent Grant
• 1157040

• References
• Source

• Patent Number

  1,157,040

• Date Filed

  Not available

• Date Issued

  Tuesday, October 19, 1915
  109 years ago

• CPC

  • H04L15/16 - with keyboard co-operating with code discs

• US Classifications

  • 178 - Telegraphy