logo

For the Inventor, By the Inventor

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.:

US 4423940 B1

PDFFull Text
Date of Patent:
Jan. 03, 1984

Filed:

Jan. 11, 1982

Photographic equipment

Applicant:
Inventors:

Toshitsugu Kashihara, Nara, JP;

Hiroshi Iwata, Nara, JP;

Tsunemi Yoshino, Nara, JP;

Akitoshi Morioka, Osaka, JP;

Assignee:

West Electric Co., Ltd., Osaka, JP;

Attorney:

Burgess, Ryan & Wayne

Primary Examiner:

William B Perkey

Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354149 ; 362 18 ;
Abstract

A photographic equipment provided with a focal-length sensing means for sensing the focal length of a photographic lens mounted on a camera body and generating the electrical output signal representative of the detected focal length and a beam-angle control means responsive to the output signal from the focal-length sensing means for changing, in response to the detected focal length, the beam angle of an electronic flash unit mounted on the camera body.

Find Patent Forward Citations

Kashihara, Toshitsugu. (1984). Photographic equipment (U.S. Patent No. 4423940). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4423940

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

Loading…