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. 16, 1977
Filed:
Oct. 14, 1975
Applicant:
Inventors:
Nobuo Yamasita, Tama, JA;
Toshihiro Imai, Hachiouji, JA;
Assignee:
Olympus Optical Co., Inc., , JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350202 ; 350225 ;
Abstract
A retrofocus-type objective for endoscopes comprising a front diverging lens group and rear converging lens group and arranged to be focused by keeping the front diverging lens group fixed and moving the rear converging lens group toward the front diverging lens group.
Yamasita, Nobuo. (1977). Retrofocus-type objective for endoscopes (U.S. Patent No. 4042295). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4042295
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile