3885395

Information

• Patent Grant
• 3885395

• References
• Source

• Patent Number

  3,885,395

• Date Filed

  Not available

• Date Issued

  Tuesday, May 27, 1975
  49 years ago

• CPC

  • E21D11/14 - Lining predominantly with metal
  • E21C41/16 - Methods of underground mining Layouts therefor
  • E21F15/08 - Filling-up hydraulically or pneumatically

• US Classifications

  • 405 - Hydraulic and earth engineering