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.
Patent No.:
Date of Patent:
Mar. 15, 1983
Filed:
Feb. 27, 1980
Applicant:
Inventor:
Hitomi Aizawa, Suwa, JP;
Assignee:
Kabushiki Kaisha Suwa Seikosha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G04C / ; G04F / ; G04C / ;
U.S. Cl.
CPC ...
368 47 ; 368156 ; 368250 ;
Abstract
An electronic wristwatch without mechanically driven hands has an electromagnetic output which is sensed for measuring the timing rate. A modulated signal applied to the coil of an alarm sounding device produces the electromagnetic field for sensing. The display is fully illuminated while timing in order to eliminate stray electric fields.