3845580

Information

• Patent Grant
• 3845580

• References
• Source

• Patent Number

  3,845,580

• Date Filed

  Not available

• Date Issued

  Tuesday, November 5, 1974
  50 years ago

• CPC

  • B42D5/06 - Tear-off calendar blocks
  • B42D5/003 - Note-pads

• US Classifications

  • 040 - Card, picture, or sign exhibiting
  • 283 - Printed matter