3277293

Information

• Patent Grant
• 3277293

• References
• Source

• Patent Number

  3,277,293

• Date Filed

  Not available

• Date Issued

  Tuesday, October 4, 1966
  58 years ago

• CPC

  • B61L1/164 - Mechanical
  • B61L1/02 - Electric devices associated with track
  • B61L25/04 - Indicating or recording train identities

• US Classifications

  • 246 - Railway switches and signals
  • 073 - Measuring and testing