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Provision is made on a container to indicate whether the container has been tampered with. Release of a vacuum from within the container causes a lid (4) of the container to become convex. This causes a coating (7) on the lid to craze and therefore produce a visible change.

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Bibliographische Detailangaben
Hauptverfasser: LIVESLEY, DAVID JOHN, SWAVESEY, CAMBRIDGE CB7 5QJ, GB, GAYLOR, IAN MICHAEL DAINES, NR. GRANTHAM, LINCOLNSHIRE, GB
Format: Patent
Sprache:ger
Schlagworte:
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Beschreibung
Zusammenfassung:Provision is made on a container to indicate whether the container has been tampered with. Release of a vacuum from within the container causes a lid (4) of the container to become convex. This causes a coating (7) on the lid to craze and therefore produce a visible change.