2111644

Information

• Patent Grant
• 2111644

• References
• Source

• Patent Number

  2,111,644

• Date Filed

  Not available

• Date Issued

  Tuesday, March 22, 1938
  87 years ago

• CPC

  • H04L13/02 - Details not particular to receiver or transmitter

• US Classifications

  • 178 - Telegraphy
  • 312 - Supports: cabinet structure