1579999

Information

• Patent Grant
• 1579999

• References
• Source

• Patent Number

  1,579,999

• Date Filed

  Not available

• Date Issued

  Tuesday, April 6, 1926
  99 years ago

• CPC

  • H04L25/46 - using tuning forks or vibrating reeds

• US Classifications

  • 178 - Telegraphy