3539810

Information

• Patent Grant
• 3539810

• References
• Source

• Patent Number

  3,539,810

• Date Filed

  Not available

• Date Issued

  Tuesday, November 10, 1970
  54 years ago

• CPC

  • B61K9/06 - by detecting or indicating heat radiation from overheated axles
  • G01J5/56 - Electrical features

• US Classifications

  • 250 - Radiant energy
  • 246 - Railway switches and signals
  • 340 - Communications: electrical