1004288

Information

• Patent Grant
• 1004288

• References
• Source

• Patent Number

  1,004,288

• Date Filed

  Not available

• Date Issued

  Tuesday, September 26, 1911
  113 years ago

• CPC

  • E21D11/00 - Lining tunnels, galleries or other underground cavities
  • E21D5/11 - with combinations of different materials

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 052 - Static structures