2153178

Information

• Patent Grant
• 2153178

• References
• Source

• Patent Number

  2,153,178

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1939
  85 years ago

• CPC

  • H04L5/245 - with a number of discharge tubes or semiconductor elements which successively connect the different channels to the transmission channels
  • H03H11/22 - providing two or more phase shifted output signals
  • H03K5/1536 - Zero-crossing detectors
  • H04J3/042 - Distributors with electron or gas discharge tubes
  • H04L13/14 - Electronic distributors

• US Classifications

  • 178 - Telegraphy