2666810

Information

• Patent Grant
• 2666810

• References
• Source

• Patent Number

  2,666,810

• Date Filed

  Not available

• Date Issued

  Tuesday, January 19, 1954
  71 years ago

• CPC

  • H04Q1/18 - Electrical details

• US Classifications

  • 379 - Telephonic communications
  • 324 - Electricity: measuring and testing
  • 340 - Communications: electrical