3887961

Information

• Patent Grant
• 3887961

• References
• Source

• Patent Number

  3,887,961

• Date Filed

  Not available

• Date Issued

  Tuesday, June 10, 1975
  49 years ago

• CPC

  • E05F3/04 - with liquid piston brakes
  • E05F3/108 - with piston rod protruding from the closer housing; Telescoping closers
  • E05Y2900/132 - Doors
  • Y10T16/276 - Liquid
  • Y10T16/2777 - Multiple piston

• US Classifications

  • 016 - Miscellaneous hardware