3052043

Information

• Patent Grant
• 3052043

• References
• Source

• Patent Number

  3,052,043

• Date Filed

  Not available

• Date Issued

  Tuesday, September 4, 1962
  62 years ago

• CPC

  • B42D5/028 - Form set holders; Articles combined therewith
  • B42D5/008 - with means for engaging sheet perforations or slots
  • G09B19/08 - Printed or written appliances

• US Classifications

  • 434 - Education and demonstration
  • 281 - Books, strips, and leaves