Envelopes – wrappers – and paperboard boxes – Paperboard box – Box material includes a coating or a nonpaperboard...
Patent
1977-10-26
1979-10-16
Lowrance, George E.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Box material includes a coating or a nonpaperboard...
40306, 206459, B65D 306, B65D 328
Patent
active
041710851
ABSTRACT:
A paper or plastic cup or container is provided having a pull-tab extending from the side seam which can be torn off by the consumer to be used as a coupon, proof-of-purchase or to reveal some form of concealed marking which might entitle the consumer to a premium, gift or other consideration. The pull-tab is notched and/or perforated in such a manner as to direct the tear parallel to the glue line of the sidewall seam and prevent it from crossing said glue line, thus maintaining the integrity of the container and preventing leakage or spill of the contents.
REFERENCES:
patent: 2093985 (1937-09-01), Starsburg
patent: 2134971 (1938-11-01), Guyer
patent: 2745586 (1956-05-01), Thoma
patent: 3827620 (1974-08-01), Ludder
patent: 3850361 (1974-11-01), Day
Lowrance George E.
Maryland Cup Corporation
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