3810574

Information

• Patent Grant
• 3810574

• References
• Source

• Patent Number

  3,810,574

• Date Filed

  Not available

• Date Issued

  Tuesday, May 14, 1974
  50 years ago

• CPC

  • B65D5/247 - and being maintained in erected condition by integral mechanical locking means formed on, or coacting with, the gusset folds
  • B65D5/003 - having ledges formed by extensions of the side walls
  • Y10S229/915 - Stacking feature

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes