2163982

Information

• Patent Grant
• 2163982

• References
• Source

• Patent Number

  2,163,982

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1939
  85 years ago

• CPC

  • E21D17/0206 - Hydraulically operated extension devices
  • B64C13/38 - with power amplification
  • F15B15/1466 - Hollow piston sliding over a stationary rod inside the cylinder
  • F15B15/1476 - Special return means
  • F15B15/261 - using positive interengagement

• US Classifications

  • 092 - Expansible chamber devices
  • 049 - Movable or removable closures
  • 104 - Railways
  • 172 - Earth working
  • 254 - Implements or apparatus for applying pushing or pulling force