3486008

Information

• Patent Grant
• 3486008

• References
• Source

• Patent Number

  3,486,008

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1969
  55 years ago

• CPC

  • B61L1/161 - characterised by the counting methods
  • B61L25/04 - Indicating or recording train identities

• US Classifications

  • 377 - Electrical pulse counters, pulse dividers, or shift registers: circuits and systems
  • 246 - Railway switches and signals
  • 324 - Electricity: measuring and testing
  • 382 - Image analysis