1545601

Information

• Patent Grant
• 1545601

• References
• Source

• Patent Number

  1,545,601

• Date Filed

  Not available

• Date Issued

  Tuesday, July 14, 1925
  100 years ago

• CPC

  • H04L25/46 - using tuning forks or vibrating reeds

• US Classifications

  • 178 - Telegraphy