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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.:

US 4944574 B1

PDFFull Text
Date of Patent:
Jul. 31, 1990

Filed:

Jan. 28, 1988

Stand magnifier and lens

Applicant:
Inventors:

Robert J Roote, High Wycombe, GB;

Ian K Pasco, Warfield, GB;

Ian J Smithers, Taplow, GB;

Paul J Fisher, Slough, GB;

Assignee:

Combined Optical Industries Limited, Berkshire, GB;

Attorney:

Scrivener and Clarke

Primary Examiner:

Bruce Y Arnold

Assistant Examiner:

Martin Lerner

Int. Cl.
CPC ...
G02B / ; G02B / ;
U.S. Cl.
CPC ...
350245 ; 350247 ; 350432 ;
Abstract

The invention discloses a bi-convex lens having aspheric surfaces, each of substantially identical curvature. The lens may be used in a stand magnifier which comprises a stand adapted to be supported on a surface and to which is attached or attachable such a magnifying lens. At least part of the stand and the lens is tiltable with respect to the surface in either direction from a position where the lens is parallel to the surface, preferably through an angle of up to 20.degree..

Find Patent Forward Citations

Roote, Robert. (1990). Stand magnifier and lens (U.S. Patent No. 4944574). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4944574

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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