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. 12, 1990
Filed:
May. 12, 1989
Yoshinobu Kudo, Osaka, JP;
Manabu Inoue, Osaka, JP;
Keisuke Maeda, Osaka, JP;
Yujiro Mima, Osaka, JP;
Hiroshi Ootsuka, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A photographic camera which assures proper use of a front converter and prevents out-of-focus photographing when the front converter is used and wherein a switch for detecting whether a tele-converter is in its operative position or inoperative position is not exposed outside the camera. The switch is provided in a converter body removably mounted on a camera body and is connected in series to another switch also provided in the camera body for operation upon attachment of the converter body to the camera. When the converter is mounted in its operative position on the camera body, it is detected by a control circuit in the camera body in accordance with a signal received from the switches, and the control circuit controls various functions of the camera in a different manner from that when the converter is not in its operative position.