2403988

Information

• Patent Grant
• 2403988

• References
• Source

• Patent Number

  2,403,988

• Date Filed

  Not available

• Date Issued

  Tuesday, July 16, 1946
  78 years ago

• CPC

  • H04L5/1407 - Artificial lines or their setting

• US Classifications

  • 370 - Multiplex communications
  • 178 - Telegraphy
  • 333 - Wave transmission lines and networks
  • 340 - Communications: electrical