An improved package lock is disclosed that may be used in a folding carton package of the type having an inner and outer flap which are double locked together, that is with at least one primary lock utilized in combination with at least one secondary lock with the secondary lock functioning to keep the primary lock from disengaging. The subject invention comprises the inner flap having formed thereon a primary female lock adjacent to the edge of the inner flap and the inner flap also having formed adjacent and separate from the primary lock, a secondary male lock. The new and improved lock structure may be utilized for an end-loading type package and also for a wrap-around type package.
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