2852279

Information

• Patent Grant
• 2852279

• References
• Source

• Patent Number

  2,852,279

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1958
  66 years ago

• CPC

  • B42D5/041 - with means for engaging calendar sheet perforations or slots
  • B42D5/042 - Diaries; Memorandum calendars
  • B42D5/065 - having plural perforation lines

• US Classifications

  • 402 - Binder device releasably engaging aperture or notch of sheet
  • 281 - Books, strips, and leaves
  • 283 - Printed matter
  • D19 - Office supplies