Pilfer resistant package

Claim 1

In a collapsible, retail package formed from a unitary blank of foldable paperboard, the combination of: a. opposed pairs of front and rear side walls and end walls hingedly interconnected to form a tubular structure open at the top and bottom; b. at least one bottom closure flap hingedly attached to the lower edge of one of said walls and secured in position to close the bottom of the tubular structure; c. top closure means for closing the top of the tubular structure after it has been filled, including: i. a horizontal inner closure flap hinged to an upper edge of one of said side walls and adapted to be folded over the top of said tubular structure; ii. a horizontal outer closure flap hinged to an upper edge of the other of said side walls and adapted to be folded over said inner closure flap in face to face engagement therewith and including a locking tab extending therefrom; d. said side walls presenting finger receiving openings adjacent the upper edges thereof; e. said one side wall opening being aligned with said locking tab for receipt thereof; f. at least one of said openings being located immediately below the upper edge of its respective side wall for receiving a portion of a stapling device to permit a proof of purchase document to be stapled to the overlapped outer and inner closure flaps and said locking tab and thereby render the package tamper resistant.