B65D 50/069

Closures with means for discouraging unauthorised opening or removal thereof, with or without indicating means, e.g. child-proof closures openable or removable by the combination of plural actions requiring the combination of different actions in succession {using integral or non-integral accessories, e.g. tool, key the closure being provided with a retractable element whereby the closure is removed by extending or raising the retractable element and exerting a lifting force on this element}