3757389

Information

• Patent Grant
• 3757389

• References
• Source

• Patent Number

  3,757,389

• Date Filed

  Not available

• Date Issued

  Tuesday, September 11, 1973
  51 years ago

• CPC

  • A44B17/00 - Press-button or snap fasteners
  • B42F13/12 - with pillars, posts, rods, or tubes
  • Y10T24/4646 - Means engages formation formed on penetrating portion
  • Y10T24/4648 - having nonresilient and resilient components
  • Y10T24/4652 - Means formed from resilient sheet metal

• US Classifications

  • 024 - Buckles, buttons, clasps, etc.
  • 040 - Card, picture, or sign exhibiting
  • 402 - Binder device releasably engaging aperture or notch of sheet