680054

Information

• Patent Grant
• 680054

• References
• Source

• Patent Number

  680,054

• Date Filed

  Not available

• Date Issued

  Tuesday, August 6, 1901
  123 years ago

• CPC

  • E05F13/04 - by platforms lowered by the weight of the user
  • Y10T16/5395 - having plural spaced hinge axes

• US Classifications

  • 049 - Movable or removable closures
  • 016 - Miscellaneous hardware