1361583

Information

• Patent Grant
• 1361583

• References
• Source

• Patent Number

  1,361,583

• Date Filed

  Not available

• Date Issued

  Tuesday, December 7, 1920
  104 years ago

• CPC

  • E21D11/003 - Linings or provisions thereon, specially adapted for traffic tunnels

• US Classifications

  • 104 - Railways
  • 105 - Railway rolling stock
  • 405 - Hydraulic and earth engineering