2167528

Information

• Patent Grant
• 2167528

• References
• Source

• Patent Number

  2,167,528

• Date Filed

  Not available

• Date Issued

  Tuesday, July 25, 1939
  85 years ago

• CPC

  • H04L17/02 - Apparatus or circuits at the transmitting end
  • H04L17/06 - Contact operating means

• US Classifications

  • 178 - Telegraphy