2107149

Information

• Patent Grant
• 2107149

• References
• Source

• Patent Number

  2,107,149

• Date Filed

  Not available

• Date Issued

  Tuesday, February 1, 1938
  87 years ago

• CPC

  • H04L1/248 - Distortion measuring systems
  • H04L25/205 - using tuning forks or vibrating reeds

• US Classifications

  • 178 - Telegraphy