leaving only an inside snap after removal of the tamper element

Patents Grantslast 30 patents

  • Information Patent Grant

    Tamper evident food package

    • Patent number 4,488,658
    • Issue date Dec 18, 1984
    • Sealright Co, Inc.
    • Ernest L. Smith
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Tamper-evident closure

    • Patent number 4,487,329
    • Issue date Dec 11, 1984
    • Maryland Cup Corporation
    • Thomas W. Winstead
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    3189214

    • Patent number 3,189,214
    • Issue date Jun 15, 1965
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL