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Printed matter – Calendar

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283 58, 283 6, B42D 1500

Patent

active

042277205

ABSTRACT:
Disclosed is a protected document such as a negotiable instrument, a title instrument, identification document or other documents which should be kept secure from illegal copying by color copiers. The method of making the document comprising preprinting a "VOID" or other warning or cancellation phrase pattern in half tone or multitone on the document and camouflaging this pattern is also disclosed.

REFERENCES:
patent: 776515 (1904-12-01), Ives
patent: 1002600 (1911-09-01), Morris et al.
patent: 1114346 (1914-10-01), Farmer
patent: 1428278 (1922-09-01), Dow
patent: 1689302 (1928-10-01), Smith
patent: 1692405 (1928-11-01), Freeman
patent: 3675948 (1972-07-01), Wicker
patent: 3852088 (1974-12-01), Godlewski et al.
patent: 3887742 (1975-06-01), Reinnagel
patent: 4025673 (1977-05-01), Reinnagel
Memo of Xerox Corporation dated May 25, 1975 from R. F. Lehman to A. Morganstern (submitted by applicants in S.N. 798,219).
McDonald's Gift Certificate (submitted by applicants in S.N. 798,219).
Sample of "Kid's Paper" made by McGhee Printing Service of Stamford, Conn., copyrighted by Niquette in 1976.

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