The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 14, 1981

Filed:

Jan. 17, 1979
Applicant:
Inventors:

Wolfgang Ganter, Schramberg, DE;

Friedrich Assmus, Schramberg, DE;

Assignee:

Gebruder Junghans GmbH, Schramberg, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B / ; G04B / ; G04C / ;
U.S. Cl.
CPC ...
368 29 ; 368 66 ; 368 76 ; 368 82 ;
Abstract

A watch comprises an electronically controlled digital display of the month, day of the month, day of the week, or other information, in addition to a time-indicating analog display system. A single control circuit, using integrated circuit technology, controls the operation of the two display systems. A synchronizing arrangement for the synchronous control of the two display systems and a battery-condition control circuit to monitor the state of the watch battery are also included. The combination of these features provides the user with a watch which can be set and corrected in a simple manner, which insures a synchronous link between all of the data being displayed, and which provides a timely warning when a battery change is necessary.


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