1502419

Information

• Patent Grant
• 1502419

• References
• Source

• Patent Number

  1,502,419

• Date Filed

  Not available

• Date Issued

  Tuesday, July 22, 1924
  100 years ago

• CPC

  • B61L3/221 - using track circuits
  • Y10T24/2111 - Tire chain tighteners

• US Classifications

  • 246 - Railway switches and signals
  • 024 - Buckles, buttons, clasps, etc.