1838208

Information

• Patent Grant
• 1838208

• References
• Source

• Patent Number

  1,838,208

• Date Filed

  Not available

• Date Issued

  Tuesday, December 29, 1931
  92 years ago

• CPC

  • B65G51/46 - according to separate signal systems

• US Classifications

  • 406 - Conveyors: fluid current
  • 104 - Railways
  • 186 - Merchandising
  • 246 - Railway switches and signals