1387671

Information

• Patent Grant
• 1387671

• References
• Source

• Patent Number

  1,387,671

• Date Filed

  Not available

• Date Issued

  Tuesday, August 16, 1921
  103 years ago

• CPC

  • B61L5/206 - Signalling means for special purposes

• US Classifications

  • 246 - Railway switches and signals