Electronic wrist watch

Special receptacle or package – For holding a machine readable recording medium – For holding a grooved phonograph disc

Patent

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Details

58 23R, 58 55R, 206 18, 350 67, G04C 300, G04B 3700, B44C 104

Patent

active

040807819

ABSTRACT:
An electronic wrist watch is provided in which an interior space contacting an electronic module is filled with a module protecting liquid. Means are provided for varying the volume of the interior space in accordance with the expansion or contraction of the liquid.

REFERENCES:
patent: 1474816 (1923-11-01), Day
patent: 3540208 (1970-11-01), Knock
patent: 3672155 (1972-06-01), Bergey et al.
patent: 3744327 (1973-07-01), Hetzel
patent: 3792578 (1974-02-01), Hetzel
160 USPQ In re Clinton Watch Co., p. 555, Jan.-Mar. 1969.

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