3640449

Information

• Patent Grant
• 3640449

• References
• Source

• Patent Number

  3,640,449

• Date Filed

  Not available

• Date Issued

  Tuesday, February 8, 1972
  53 years ago

• CPC

  • B65D5/28 - with extensions of sides permanently secured to adjacent sides, with sides permanently secured together by adhesive strips, or with sides held in place solely by rigidity of material
  • B65D5/545 - for opening containers formed by erecting a "cross-like" blank
  • B65D5/6652 - Flaps or tabs provided at the side edges of the lid only

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes
  • 206 - Special receptacle or package