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:
Feb. 01, 1983
Filed:
Aug. 05, 1981
Applicant:
Inventors:
Hiroshi Iwata, Ikoma, JP;
Tsunemi Yoshino, Ibaraki, JP;
Toshitsugu Kashihara, Nara, JP;
Akitoshi Morioka, Osaka, JP;
Assignee:
West Electric Company, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G02B / ;
U.S. Cl.
CPC ...
354198 ; 350255 ;
Abstract
A photographing lens, which is to be mounted on a camera in an interchangeable manner is provided with a focus-informing means, which informs the photographer of focussings of the photographing lens during manual focussing operation thereof by buzzer or by small lamp, thereby enabling to provide a semi-automatic focussing for a conventional camera body without provision of an automatic focus adjusting means.