3601664

Information

• Patent Grant
• 3601664

• References
• Source

• Patent Number

  3,601,664

• Date Filed

  Not available

• Date Issued

  Tuesday, August 24, 1971
  53 years ago

• CPC

  • B61L1/167 - Circuit details

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 246 - Railway switches and signals
  • 324 - Electricity: measuring and testing