2977418

Information

• Patent Grant
• 2977418

• References
• Source

• Patent Number

  2,977,418

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1961
  65 years ago

• CPC

  • G09B19/26 - Dot-and dash telegraphic codes

• US Classifications

  • 178 - Telegraphy
  • 331 - Oscillators
  • 340 - Communications: electrical
  • 381 - Electrical audio signal processing systems and devices
  • 434 - Education and demonstration