3745772

Information

• Patent Grant
• 3745772

• References
• Source

• Patent Number

  3,745,772

• Date Filed

  Not available

• Date Issued

  Tuesday, July 17, 1973
  51 years ago

• CPC

  • E21D11/14 - Lining predominantly with metal

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 248 - Supports