Windowed folding cartons
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 3, 1992
Grant Date -
N/A
app pub date -
Oct 16, 1991
filing date -
Oct 16, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A windowed paperboard carton having a window aperture extending across two or three major wall panels, which aperture is closed by a clear plastic sheet. The plastic is adhered to the carton in selected areas but not in zones of articulation where the window goes around the corner of the carton. Special elongated slots are disposed along the lines of articulation of the plastic sheet and paperboard in non-adhesive areas to eliminate deleterious stress concentrations in the composite paperboard-plastic sheet blank.
First Claim
Family
International Classification(s)
Cited Art Landscape
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