2552821

Information

• Patent Grant
• 2552821

• References
• Source

• Patent Number

  2,552,821

• Date Filed

  Not available

• Date Issued

  Tuesday, May 15, 1951
  73 years ago

• CPC

  • E05F3/02 - with pneumatic piston brakes
  • E05Y2900/132 - Doors
  • Y10S16/09 - Hydraulic actuated checks, closers
  • Y10T16/286 - Spring and lever

• US Classifications

  • 016 - Miscellaneous hardware
  • 188 - Brakes