2469540

Information

• Patent Grant
• 2469540

• References
• Source

• Patent Number

  2,469,540

• Date Filed

  Not available

• Date Issued

  Tuesday, May 10, 1949
  75 years ago

• CPC

  • B42F13/12 - with pillars, posts, rods, or tubes
  • Y10T24/4679 - having penetrating portion retractable or of changeable length

• US Classifications

  • 402 - Binder device releasably engaging aperture or notch of sheet
  • 024 - Buckles, buttons, clasps, etc.