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:
Aug. 09, 1977
Filed:
Jul. 25, 1975
Applicant:
Inventors:
Masahiro Kawasaki, Tokyo, JA;
Hirokazu Ando, Tokyo, JA;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354 51 ;
Abstract
A memory capacitor in an electric shutter circuit has one terminal coupled to a voltage responsive element such as a diode, which operates to effectively reduce the level to which the capacitor is charged to thereby attain a decrease in discharge time of the capacitor enabling rapid shutter operation.