2057524

Information

• Patent Grant
• 2057524

• References
• Source

• Patent Number

  2,057,524

• Date Filed

  Not available

• Date Issued

  Tuesday, October 13, 1936
  88 years ago

• CPC

  • E21D5/04 - with brick, concrete, stone, or similar building materials
  • E21D5/10 - in the form of tubbing or of rings composed of profile elements
  • E21D11/00 - Lining tunnels, galleries or other underground cavities
  • E21D11/15 - Plate linings Laggings

• US Classifications

  • 405 - Hydraulic and earth engineering