2663760

Information

• Patent Grant
• 2663760

• References
• Source

• Patent Number

  2,663,760

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1953
  71 years ago

• CPC

  • H04Q1/18 - Electrical details

• US Classifications

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