2194371

Information

• Patent Grant
• 2194371

• References
• Source

• Patent Number

  2,194,371

• Date Filed

  Not available

• Date Issued

  Tuesday, March 19, 1940
  85 years ago

• CPC

  • B61L3/221 - using track circuits
  • B61L3/222 - Arrangements on the track only

• US Classifications

  • 246 - Railway switches and signals