Chronograph wristwatch

Details Chronograph wristwatch Chronograph wristwatch

1973-09-24

1976-04-20

Jackmon, Edith Simmons

58 50R, 58 74, 58152R, G04F 802, G04B 1930, G04F 704, G04B 4706

Patent

active

039509354

ABSTRACT:
An electronic timepiece having a single digital display and being suitable to operate as a standard timekeeping wristwatch or in the alternative as a chronograph. Separate divider circuits are provided for performing the timekeeping and chronograph functions, a first selector circuit selecting which function is to be displayed. A single set of switches is provided for controlling either divider circuit, a second selected circuit selecting which function is performed by said switches.

REFERENCES:
patent: 3646751 (1972-03-01), Purland et al.
patent: 3668861 (1972-06-01), Mitsui
patent: 3717990 (1973-02-01), Fujita
patent: 3745761 (1973-07-01), Tsuruishi
patent: 3757509 (1973-09-01), Fujita
patent: 3795099 (1974-03-01), Tsuruishi
patent: 3854277 (1974-12-01), Samejima, et al.

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