Printed matter – Strips
Patent
1990-05-25
1990-11-27
Bell, Paul A.
Printed matter
Strips
283117, 40365, 40427, 350140, B42D 1500
Patent
active
049730878
ABSTRACT:
A mailing card is formed of a single sheet of card stock in which a perforated delineation extends entirely across the sheet of card stock to define first and second portions thereof and to facilitate complete separation of those portions from each other. An opening with at least one transparent window tinted in a first color is defined in the first portion of the card stock. Matter is printed on the second portion of the card stock in both the color of the window and in at least one other contrasting color. The first and second portions of the card stock are separated from each other. The printed matter on the second portion is then viewed through the window in the first portion which masks the matter printed in the same color as the window. Hidden messages can thereby be decoded in this manner. Also, a pair of transparent anaglyphic windows can be provided on the first portion of the card stock to view a picture printed anaglyphically on the second portion of the card stock when the first and second portions are completely separated from each other.
REFERENCES:
patent: 3291 (1869-02-01), Mascher
patent: 40654 (1863-11-01), Tresize
patent: 906774 (1908-12-01), Colwell
patent: 991948 (1911-05-01), Carley
patent: 1989454 (1935-01-01), Koster
patent: 2190646 (1940-02-01), Branson
patent: 2616333 (1952-11-01), Tinker
Bell Paul A.
Payer Hwei-Siu
Thomas Charles H.
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