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:
Jul. 24, 1984

Filed:

Feb. 18, 1983
Applicant:
Inventor:

Fumiaki Hiraike, Hachioji, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
354432 ; 354465 ; 354477 ;
Abstract

An exposure ascertaining device for cameras in which the movement of a movable member adapted to be moved when the film is exposed is ascertained on the basis of an output from a photoelectric element disposed in a position where said photoelectric element can receive the incident light advancing toward a film-set side of the camera. The photoelectric element is provided on the movable member, or disposed in a position where it can receive that part of the incident light which does not enter the image forming part of the surface of a film.


Find Patent Forward Citations

Hiraike, Fumiaki. (1984). Exposure ascertaining device for cameras (U.S. Patent No. 4461559). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4461559

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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