2221531

Information

• Patent Grant
• 2221531

• References
• Source

• Patent Number

  2,221,531

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1940
  84 years ago

• CPC

  • E05C17/345 - using friction
  • Y10S70/12 - Extension link with detachable link fastener
  • Y10T292/282 - Multiple
  • Y10T292/301 - Friction catch

• US Classifications

  • 292 - Closure fasteners
  • 070 - Locks