2947090

Information

• Patent Grant
• 2947090

• References
• Source

• Patent Number

  2,947,090

• Date Filed

  Not available

• Date Issued

  Tuesday, August 2, 1960
  64 years ago

• CPC

  • G09B19/26 - Dot-and dash telegraphic codes

• US Classifications

  • 434 - Education and demonstration
  • 178 - Telegraphy