2192554

Information

• Patent Grant
• 2192554

• References
• Source

• Patent Number

  2,192,554

• Date Filed

  Not available

• Date Issued

  Tuesday, March 5, 1940
  84 years ago

• CPC

  • E21D11/04 - Lining with building materials

• US Classifications

  • 405 - Hydraulic and earth engineering