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:
Jun. 28, 1977
Filed:
Mar. 03, 1975
Tadashi Ito, Kanagawa, JA;
Masanori Uchidoi, Kawasaki, JA;
Tetsuya Taguchi, Kawasaki, JA;
Tokuichi Tunekawa, Kanagawa, JA;
Hiroshi Aizawa, Machida, JA;
Yoshiyuki Takishima, Machida, JA;
Canon Kabushiki Kaisha, Tokyo, JA;
Abstract
A camera having an indication system to determine suitable diaphragm aperture value by measuring the light penetrating through a photographing lens and to indicate the same digitally, wherein when said diaphragm aperture value exceeds the limit value of exposure control of a camera, a warning indication is given by the indication means to indicate the fact that the diaphragm aperture value is outside of control limit, and the number of input/output lead wires to the indication means is reduced. Thus simplifying the set-up.