1158821

Information

• Patent Grant
• 1158821

• References
• Source

• Patent Number

  1,158,821

• Date Filed

  Not available

• Date Issued

  Tuesday, November 2, 1915
  110 years ago

• CPC

  • B61L13/045 - using separated rail contacts, pedals or similar

• US Classifications

  • 246 - Railway switches and signals
  • 346 - Recorders