2795936

Information

• Patent Grant
• 2795936

• References
• Source

• Patent Number

  2,795,936

• Date Filed

  Not available

• Date Issued

  Tuesday, June 18, 1957
  67 years ago

• CPC

  • E21D23/0095 - Temporary supports at the driving front

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 248 - Supports
  • 299 - Mining or in situ disintegration of hard material