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:
Dec. 28, 2010
Filed:
Feb. 04, 2008
Applicant:
Albert John Hofeldt, Miami Beach, FL (US);
Inventor:
Albert John Hofeldt, Miami Beach, FL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vision testing device for measuring single or multiple visual functions consisting of an internally illuminated hand-held instrument, vision charts, vision correcting and occluding elements, a testing frame for holding combined vision correcting and blocking elements, and modular accessories.
Hofeldt, Albert. (2010). Hand-held device for contrast and multifunction vision testing (U.S. Patent No. 7857450). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7857450
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