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:
Jan. 11, 1977
Filed:
Sep. 06, 1974
Applicant:
Inventors:
Akira Takahashi, Tokyo, JA;
Mikio Kobayashi, Kawasaki, JA;
Assignee:
Ricoh Co., Ltd., Tokyo, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354 50 ; 354 / ; 354267 ;
Abstract
An automatic exposure adjusting circuit for use in a camera which permits the power to be supplied to several groups of circuits having different operation initiating and terminating times, only during their respective operative intervals. The invention also includes means for preventing power dissipation when a power package such as a battery is fitted into the camera with a wrong polarity connection and for protecting the electronic circuit.