1920868

Information

• Patent Grant
• 1920868

• References
• Source

• Patent Number

  1,920,868

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1933
  91 years ago

• CPC

  • E05F3/06 - in which a torsion spring rotates a member around an axis perpendicular to the axis of the piston
  • Y10S70/48 - Fluid pressure lock
  • Y10T16/27 - Checks and closers
  • Y10T292/03 - Miscellaneous
  • Y10T292/1021 - Motor
  • Y10T292/54 - Trippers

• US Classifications

  • 016 - Miscellaneous hardware
  • 049 - Movable or removable closures
  • 060 - Power plants
  • 070 - Locks
  • 292 - Closure fasteners