Clock-studying picture book

Details Clock-studying picture book Clock-studying picture book

1988-11-14

1990-01-23

Watts, Douglas D.

Books, strips, and leaves

Book, element thereof, or accessory therefor

281 30, 368245, 368272, B42D 314, B42D 312, G04C 2116, G04B 2100

Patent

active

048953938

ABSTRACT:
In a clock-studying picture book, a picture book body illustrating respective picture patterns relating to various times of day is provided with a sound generator which, when a long hand or short hand, or both the long and short hands are controlled to point to a specific time, generates a sound making the specific time recognizable, so that the infant can study the clock and time while enjoying himself during play.

REFERENCES:
patent: 693647 (1902-02-01), Hirschfield
patent: 1521600 (1925-01-01), Crowe
patent: 1743512 (1930-01-01), Aisen
patent: 4060973 (1977-12-01), Martino
patent: 4523858 (1985-06-01), Nishimura et al.

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