2412642

Information

• Patent Grant
• 2412642

• References
• Source

• Patent Number

  2,412,642

• Date Filed

  Not available

• Date Issued

  Tuesday, December 17, 1946
  78 years ago

• CPC

  • H04L13/14 - Electronic distributors

• US Classifications

  • 178 - Telegraphy
  • 315 - Electric lamp and discharge devices: systems
  • 370 - Multiplex communications