2687451

Information

• Patent Grant
• 2687451

• References
• Source

• Patent Number

  2,687,451

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1954
  70 years ago

• CPC

  • H04L5/245 - with a number of discharge tubes or semiconductor elements which successively connect the different channels to the transmission channels
  • A24D1/16 - Bands for cigars or cigarettes
  • H04L13/14 - Electronic distributors
  • H04L25/45 - using electronic distributors

• US Classifications

  • 178 - Telegraphy
  • 370 - Multiplex communications