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:
Jan. 23, 1996
Filed:
Jun. 06, 1994
Mark Barnett, San Diego, CA (US);
Other;
Abstract
Two identical plates somewhat in the shape of very large eyeglass frames sandwiching two rotable discs, one for each eye, form the front section of the device. Each disc has a series of magnifying lenses of increasing power which can be brought into the eye openings in the plate when the discs are rotated and allow the user to focus on a group of alphbetical characters of a predetermined size and at a predetermined distance from the lenses at the end of a view tunnel. The strength of the lenses required for focusing can then be read from the disc where it is clearly indicated next to each lens. These lens strengths correspond to the power of reading glasses sold non-prescription in most drug stores.