2473749

Information

• Patent Grant
• 2473749

• References
• Source

• Patent Number

  2,473,749

• Date Filed

  Not available

• Date Issued

  Tuesday, June 21, 1949
  75 years ago

• CPC

  • G09B19/26 - Dot-and dash telegraphic codes

• US Classifications

  • 178 - Telegraphy