3003502

Information

• Patent Grant
• 3003502

• References
• Source

• Patent Number

  3,003,502

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1961
  63 years ago

• CPC

  • B41L3/04 - Bars provided with pins engaging perforations in the elements

• US Classifications

  • 402 - Binder device releasably engaging aperture or notch of sheet
  • 462 - Books, strips, and leaves for manifolding
  • D19 - Office supplies