2934637

Information

• Patent Grant
• 2934637

• References
• Source

• Patent Number

  2,934,637

• Date Filed

  Not available

• Date Issued

  Tuesday, April 26, 1960
  64 years ago

• CPC

  • B61L3/221 - using track circuits
  • B61L2003/228 - Constructional details

• US Classifications

  • 246 - Railway switches and signals
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 330 - Amplifiers
  • 361 - Electricity: electrical systems and devices