2155450

Information

• Patent Grant
• 2155450

• References
• Source

• Patent Number

  2,155,450

• Date Filed

  Not available

• Date Issued

  Tuesday, April 25, 1939
  85 years ago

• CPC

  • B65D5/2038 - at least two opposed folded-up portions having a non-rectangular shape
  • B65D5/304 - the tongue being folded over after being intoduced in the slot
  • B65D5/4295 - Ventilating arrangements
  • B65D5/48024 - inserted

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes