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:
Nov. 23, 1993
Filed:
Aug. 03, 1992
Applicant:
Inventor:
Hidehiko Fukahori, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354288 ; 354150 ; 354152 ; 354202 ;
Abstract
In a camera having a pentagonal prism, a focusing screen and a mirror box, the mirror box is molded integrally with a first mounting part for mounting the pentagonal prism and a second mounting part for mounting the focusing screen. The second mounting part is provided with a draft for mold release. The focusing screen is provided with a tapered projection, which approximately coincides with the draft of the second mounting part and extends along almost the whole periphery of the focusing screen.