1669695

Information

• Patent Grant
• 1669695

• References
• Source

• Patent Number

  1,669,695

• Date Filed

  Not available

• Date Issued

  Tuesday, May 15, 1928
  96 years ago

• CPC

  • B61L29/023 - Special gates

• US Classifications

  • 116 - Signals and indicators
  • 246 - Railway switches and signals