1724647

Information

• Patent Grant
• 1724647

• References
• Source

• Patent Number

  1,724,647

• Date Filed

  Not available

• Date Issued

  Tuesday, August 13, 1929
  95 years ago

• CPC

  • B61L5/125 - Fixed signals, beacons, or the like

• US Classifications

  • 040 - Card, picture, or sign exhibiting