3889844

Information

• Patent Grant
• 3889844

• References
• Source

• Patent Number

  3,889,844

• Date Filed

  Not available

• Date Issued

  Tuesday, June 17, 1975
  49 years ago

• CPC

  • B21D51/383 - scoring lines, tear strips or pulling tabs
  • B65D17/505 - applied to the external and internal part of the container wall
  • B65D17/506 - Rigid or semi-rigid members
  • B65D2517/0013 - pull-out tear panel
  • B65D2517/007 - located within tear-out/push-in panel
  • B65D2517/0094 - formed as a separate opening
  • B65D2517/5083 - with means facilitating initial lifting of tape

• US Classifications

  • 220 - Receptacles
  • 222 - Dispensing
  • 229 - Envelopes, wrappers, and paperboard boxes