3811288

Information

• Patent Grant
• 3811288

• References
• Source

• Patent Number

  3,811,288

• Date Filed

  Not available

• Date Issued

  Tuesday, May 21, 1974
  50 years ago

• CPC

  • E21D23/0436 - Means for inclining the base member of the support
  • E21D23/0039 - and supported by a strut or by a row of struts parallel to the working face

• US Classifications

  • 405 - Hydraulic and earth engineering