3223934

Information

• Patent Grant
• 3223934

• References
• Source

• Patent Number

  3,223,934

• Date Filed

  Not available

• Date Issued

  Tuesday, December 14, 1965
  59 years ago

• CPC

  • B61L29/226 - using track-circuits, closed or short-circuited by train or using isolated rail-sections

• US Classifications

  • 330 - Amplifiers
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems