Calendars

Details Calendars Calendars

1976-12-03

1980-11-11

Pitrelli, John F.

Card, picture, or sign exhibiting

Calendars

Hinged leaves

40160, 40615, G09D 304

Patent

active

042324629

ABSTRACT:
A calendar has transparent overlay pages which carry opaque calendar data areas and opaque picture portions which are superimposed on an underlying picture, with the opaque picture portions depicting the underlying obscured portions at a different season of the year.

REFERENCES:
patent: 2149779 (1939-03-01), Kroner
The World Book Encyclopedia, 1974, vol. 9, pp. 378-379.
Structure, 1941, Gen. Electric Co.

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