2102899

Information

• Patent Grant
• 2102899

• References
• Source

• Patent Number

  2,102,899

• Date Filed

  Not available

• Date Issued

  Tuesday, December 21, 1937
  87 years ago

• CPC

  • H04L19/00 - Apparatus or local circuits for step-by-step systems

• US Classifications

  • 178 - Telegraphy