2502813

Information

• Patent Grant
• 2502813

• References
• Source

• Patent Number

  2,502,813

• Date Filed

  Not available

• Date Issued

  Tuesday, April 4, 1950
  74 years ago

• CPC

  • B42D1/002 - Back of leaves or signatures prepared for binding
  • B42D1/06 - in which the fillings and covers are united by other means

• US Classifications

  • 281 - Books, strips, and leaves