3295814

Information

• Patent Grant
• 3295814

• References
• Source

• Patent Number

  3,295,814

• Date Filed

  Not available

• Date Issued

  Tuesday, January 3, 1967
  58 years ago

• CPC

  • E21D15/512 - Arrangement of valves
  • E21D15/44 - Hydraulic, pneumatic, or hydraulic-pneumatic props
  • E21D15/606 - the props being moved systematically
  • E21D23/16 - Hydraulic or pneumatic features
  • E21D23/18 - of advancing mechanisms
  • E21D23/26 - Hydraulic or pneumatic control

• US Classifications

  • 254 - Implements or apparatus for applying pushing or pulling force