2292783

Information

• Patent Grant
• 2292783

• References
• Source

• Patent Number

  2,292,783

• Date Filed

  Not available

• Date Issued

  Tuesday, August 11, 1942
  82 years ago

• CPC

  • H04L25/202 - using mechanical devices

• US Classifications

  • 370 - Multiplex communications
  • 178 - Telegraphy