2621631

Information

• Patent Grant
• 2621631

• References
• Source

• Patent Number

  2,621,631

• Date Filed

  Not available

• Date Issued

  Tuesday, December 16, 1952
  72 years ago

• CPC

  • E21D15/60 - Devices for withdrawing props or chocks
  • E21D15/45 - having closed fluid system

• US Classifications

  • 060 - Power plants
  • 091 - Motors: expansible chamber type
  • 092 - Expansible chamber devices
  • 254 - Implements or apparatus for applying pushing or pulling force
  • 405 - Hydraulic and earth engineering