2226952

Information

• Patent Grant
• 2226952

• References
• Source

• Patent Number

  2,226,952

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1940
  84 years ago

• CPC

  • H04B3/20 - Reducing echo effects or singing Opening or closing transmitting path Conditioning for transmission in one direction or the other
  • H01H47/36 - Relay coil or coils forming part of a bridge circuit

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 379 - Telephonic communications