Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening
Patent
1992-02-21
1992-11-24
Marcus, Stephen
Envelopes, wrappers, and paperboard boxes
Paperboard box
With closure for an access opening
B65D 508
Patent
active
051655934
ABSTRACT:
A packing box made by folding a sheet material, and comprised of a body portion, a bottom portion at one end, and a cap portion at an opposite end, said cap portion being folded into four cap panels and four end panels, said end panels being folded up outwards and overlapped on said cap panels respectively, said cap panels being cut into four blocking panels, wherein twisting said cap panels and end panels downwards in one direction causes said blocking panels to be intersected and overlapped one another in blocking up the top opening of the packing box; twisting said cap panels and end panels upwards in an opposite direction causes said blocking panels to be separated from one another permitting said top opening to be opened.
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patent: 4795081 (1989-01-01), Miller
patent: 4930680 (1990-06-01), Hanus
Marcus Stephen
McDonald Christopher
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