2226721

Information

• Patent Grant
• 2226721

• References
• Source

• Patent Number

  2,226,721

• Date Filed

  Not available

• Date Issued

  Tuesday, December 31, 1940
  85 years ago

• CPC

  • E05D13/1276 - with coiled ribbon springs
  • E05Y2900/148 - Windows
  • Y10T16/641 - Drum and cord
  • Y10T16/65 - Sash-cord fasteners
  • Y10T16/714 - Multiple wheel
  • Y10T24/3913 - Knot engaging

• US Classifications

  • 016 - Miscellaneous hardware
  • 024 - Buckles, buttons, clasps, etc.
  • 242 - Winding, tensioning, or guiding