3750938

Information

• Patent Grant
• 3750938

• References
• Source

• Patent Number

  3,750,938

• Date Filed

  Not available

• Date Issued

  Tuesday, August 7, 1973
  51 years ago

• CPC

  • B65D55/02 - Locking devices Means for discouraging or indicating unauthorised opening or removal of closure
  • B65D27/20 - using self-locking integral or attached elements

• US Classifications

  • 229 - Envelopes, wrappers, and paperboard boxes