3137434

Information

• Patent Grant
• 3137434

• References
• Source

• Patent Number

  3,137,434

• Date Filed

  Not available

• Date Issued

  Tuesday, June 16, 1964
  60 years ago

• CPC

  • B65D5/248 - and at least one side being extended and doubled-over to enclose the adjacent gusset flaps
  • B65D5/3664 - and at least one side being extended and doubled-over to enclose the adjacent gusset flaps

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes