Printed matter – Calendar
Patent
1978-04-21
1981-06-16
Bell, Paul A.
Printed matter
Calendar
283 8B, 283 9R, 229 83, 229 48SA, 229 48SB, B42D 1500
Patent
active
042733626
ABSTRACT:
An information-bearing article for conveying indicia from one person to a second person in such a way that the information cannot be surreptitiously detected by an intervening person. Thus, the information-bearing means is so constructed that detection thereof necessarily requires some irreparable and detectable disfigurement or mutilation of the information-bearing article. Use of the article in lottery ticket distribution and use in connection with the transfer of highly confidential governmental or business information, are typical applications. The most advantageous construction of the invention combines means to avoid surreptitious detection of the hidden indicia by optical, chemical, thermal and mechanical processes.
REFERENCES:
patent: 2032386 (1936-03-01), Wood
patent: 2181252 (1939-11-01), Vogel
patent: 2209601 (1940-07-01), Heywood
patent: 3391479 (1968-07-01), Buzzell et al.
patent: 3412493 (1968-11-01), French
patent: 3566521 (1971-03-01), Conner
patent: 3655494 (1972-04-01), Buzzell
patent: 3732119 (1973-05-01), Churchill et al.
patent: 3827625 (1974-08-01), Miller
patent: 3895755 (1975-07-01), McCarthy
Carpenter Leon G.
Carrier Lee A.
Bell Paul A.
Cesari Robert A.
Kehoe Andrew F.
Ludlow Corporation
McKenna John F.
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