1637832

Information

• Patent Grant
• 1637832

• References
• Source

• Patent Number

  1,637,832

• Date Filed

  Not available

• Date Issued

  Tuesday, August 2, 1927
  97 years ago

• CPC

  • B42F3/00 - Sheets temporarily attached together involving perforations Means therefor Sheet details therefor
  • Y10S24/901 - Penetrating-type paper fastener
  • Y10T24/493 - and distinct fastener structure cooperating with impaled structure

• US Classifications

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