1391995

Information

• Patent Grant
• 1391995

• References
• Source

• Patent Number

  1,391,995

• Date Filed

  Not available

• Date Issued

  Tuesday, September 27, 1921
  103 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
  • 404 - Road structure, process, or apparatus