3565462

Information

• Patent Grant
• 3565462

• References
• Source

• Patent Number

  3,565,462

• Date Filed

  Not available

• Date Issued

  Tuesday, February 23, 1971
  54 years ago

• CPC

  • G09B29/00 - Maps Plans Charts Diagrams
  • B42D13/00 - Loose leaves modified for binding Inserts
  • B42D15/0006 - Paper provided with guiding marks
  • B42D15/004 - Questionnaires, statistics

• US Classifications

  • 281 - Books, strips, and leaves
  • 283 - Printed matter
  • 402 - Binder device releasably engaging aperture or notch of sheet
  • 434 - Education and demonstration