3333425

Information

• Patent Grant
• 3333425

• References
• Source

• Patent Number

  3,333,425

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1967
  57 years ago

• CPC

  • E21D15/585 - by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
  • E21D17/0206 - Hydraulically operated extension devices
  • E21D23/006 - provided with essential hydraulic devices
  • E21D23/0069 - without essential advancing shifting devices
  • F15B3/00 - Intensifiers or fluid-pressure converters

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 417 - Pumps