2644633

Information

• Patent Grant
• 2644633

• References
• Source

• Patent Number

  2,644,633

• Date Filed

  Not available

• Date Issued

  Tuesday, July 7, 1953
  72 years ago

• CPC

  • B65D5/46152 - formed in closure flaps of a container formed by folding a blank to U-shape to form the base and opposite sides, the remaining sides being formed by extensions of these opposite sides
  • B65D5/2038 - at least two opposed folded-up portions having a non-rectangular shape
  • B65D5/2057 - Inter-engaging self-locking flaps
  • B65D5/30 - with tongue-and-slot or like connections between sides and extensions of other sides

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes