1397505

Information

• Patent Grant
• 1397505

• References
• Source

• Patent Number

  1,397,505

• Date Filed

  Not available

• Date Issued

  Tuesday, November 22, 1921
  103 years ago

• CPC

  • E01C5/04 - made of bricks
  • E01C2201/02 - having fixed spacing features

• US Classifications

  • 404 - Road structure, process, or apparatus