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:
Dec. 29, 1987
Filed:
Apr. 26, 1985
Applicant:
Inventor:
Kiyoshi Alyfuku, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354468 ; 354424 ; 354475 ;
Abstract
A battery checking circuit constructed with a pulse generating circuit for producing a pulse in response to operation of a camera, a counter for counting the pulses produced from the pulse generating circuit, a display divided into a plurality of parts for displaying the remaining amount of electric energy of a battery according to the number of energized display parts, and a display control circuit for controlling the display in accordance with the output of the counter.