3912304

Information

• Patent Grant
• 3912304

• References
• Source

• Patent Number

  3,912,304

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1975
  49 years ago

• CPC

  • B42D1/02 - in which the fillings and covers are connected by end papers
  • B42B5/08 - by finger, claw or ring-like elements passing through the sheets, quires or signatures
  • B42C11/04 - Machines or equipment for casing-in or applying covers to books

• US Classifications

  • 281 - Books, strips, and leaves
  • D19 - Office supplies