1531432

Information

• Patent Grant
• 1531432

• References
• Source

• Patent Number

  1,531,432

• Date Filed

  Not available

• Date Issued

  Tuesday, March 31, 1925
  99 years ago

• CPC

  • E01C1/007 - Design or auxiliary structures for compelling drivers to slow down or to proceed with caution

• US Classifications

  • 238 - Railways: surface track
  • 246 - Railway switches and signals