3623526

Information

• Patent Grant
• 3623526

• References
• Source

• Patent Number

  3,623,526

• Date Filed

  Not available

• Date Issued

  Tuesday, November 30, 1971
  53 years ago

• CPC

  • B42D3/045 - Protective cases for books
  • B65D27/00 - Envelopes or like essentially-rectangular containers for postal or other purposes having no structural provision for thickness of contents
  • B65D75/14 - in sheets or blanks folded-up around all sides of the contents from a portion on which the contents are placed
  • B65D2313/02 - of hook-and-loop type
  • Y10T428/24017 - Hook or barb

• US Classifications

  • 383 - Flexible bags
  • 229 - Envelopes, wrappers, and paperboard boxes
  • 428 - Stock material or miscellaneous articles