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:
Feb. 23, 1993
Filed:
May. 21, 1991
Applicant:
Inventors:
Janet L Crossman, Bellevue, WA (US);
Phillip J Erickson, Bellevue, WA (US);
Gregory L Heacock, Seattle, WA (US);
Martin A Mainster, Overland Park, KS (US);
Assignee:
Ocular Instruments, Inc., Bellevue, WA (US);
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351219 ;
Abstract
An ophthalmic lens which has three elements, a contact lens, a center lens, and an entry lens. The lens produces a magnified aerial image of the fundus of the eye. The lens is particularly useful because it provides high magnification and detail of the fundus as well as good stereoscopic field.
Crossman, Janet. (1993). High magnification ophthalmic lens (U.S. Patent No. 5189450). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5189450
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile