1796917

Information

• Patent Grant
• 1796917

• References
• Source

• Patent Number

  1,796,917

• Date Filed

  Not available

• Date Issued

  Tuesday, March 17, 1931
  94 years ago

• CPC

  • B61L5/1809 - Daylight signals

• US Classifications

  • 246 - Railway switches and signals
  • 362 - Illumination