1541722

Information

• Patent Grant
• 1541722

• References
• Source

• Patent Number

  1,541,722

• Date Filed

  Not available

• Date Issued

  Tuesday, June 9, 1925
  99 years ago

• CPC

  • E01B9/50 - by keys

• US Classifications

  • 238 - Railways: surface track
  • 298 - Land vehicles: dumping