3652867

Information

• Patent Grant
• 3652867

• References
• Source

• Patent Number

  3,652,867

• Date Filed

  Not available

• Date Issued

  Tuesday, March 28, 1972
  53 years ago

• CPC

  • H02H7/266 - involving switching on a spare supply
  • G08B25/045 - with sensing devices and central station in a closed loop
  • H04B1/745 - using by-passing or self-healing methods
  • Y10T307/729 - Condition responsive

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 340 - Communications: electrical