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. 27, 1985
Filed:
Apr. 09, 1984
Applicant:
Inventors:
Ryoichi Suzuki, Kanagawa, JP;
Ryuji Tokuda, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354403 ;
Abstract
An active type automatic focusing device which has a signal projecting means and an electromagnetic means for starting a focal point adjusting action actuated by a power supply to the electromagnetic means and is provided with an inhibiting means which inhibits the power supply to the signal projecting means at least during a period in which a current flows to the electromagnetic means for actuating the device.