2159451

Information

• Patent Grant
• 2159451

• References
• Source

• Patent Number

  2,159,451

• Date Filed

  Not available

• Date Issued

  Tuesday, May 23, 1939
  85 years ago

• CPC

  • B65D5/4295 - Ventilating arrangements
  • B65D5/48012 - combined with inserted partitions
  • B65D5/6635 - the lid-halves being held in closed position by flaps or tabs provided at their edge opposite to their hinge

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes