3544134

Information

• Patent Grant
• 3544134

• References
• Source

• Patent Number

  3,544,134

• Date Filed

  Not available

• Date Issued

  Tuesday, December 1, 1970
  54 years ago

• CPC

  • B42D5/043 - Supports for desk-type calendars or diaries
  • B42D5/041 - with means for engaging calendar sheet perforations or slots
  • Y10S229/931 - Fold includes slit or aperture

• US Classifications

  • 281 - Books, strips, and leaves
  • 229 - Envelopes, wrappers, and paperboard boxes
  • 402 - Binder device releasably engaging aperture or notch of sheet