3367117

Information

• Patent Grant
• 3367117

• References
• Source

• Patent Number

  3,367,117

• Date Filed

  Not available

• Date Issued

  Tuesday, February 6, 1968
  56 years ago

• CPC

  • E21D23/081 - forming parts of the roof supports
  • E21D23/0052 - with advancing shifting devices connected therewith
  • E21D23/0418 - Positioning devices and stabilizing means for the props

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 248 - Supports