990485

Information

• Patent Grant
• 990485

• References
• Source

• Patent Number

  990,485

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1911
  113 years ago

• CPC

  • G09B19/26 - Dot-and dash telegraphic codes
  • H04L15/16 - with keyboard co-operating with code discs

• US Classifications

  • 178 - Telegraphy