3272982

Information

• Patent Grant
• 3272982

• References
• Source

• Patent Number

  3,272,982

• Date Filed

  Not available

• Date Issued

  Tuesday, September 13, 1966
  58 years ago

• CPC

  • B61L3/065 - controlling optically
  • B60L3/00 - Electric devices on electrically-propelled vehicles for safety purposes Monitoring operating variables
  • G01S11/12 - using electromagnetic waves other than radio waves
  • B60L2200/26 - Rail vehicles

• US Classifications

  • 246 - Railway switches and signals
  • 104 - Railways
  • 250 - Radiant energy
  • 318 - Electricity: motive power systems
  • 361 - Electricity: electrical systems and devices