3684159

Information

• Patent Grant
• 3684159

• References
• Source

• Patent Number

  3,684,159

• Date Filed

  Not available

• Date Issued

  Tuesday, August 15, 1972
  52 years ago

• CPC

  • B65D5/6667 - and connected to one another in order to form an uninterrupted telescoping flange
  • B65D5/26 - with extensions of opposite sides mutually interlocking to lie against other sides
  • B65D5/4204 - Inspection openings or windows
  • B65D5/546 - the lines of weakness being provided in an extension panel or tab of a hinged closure

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes