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. 28, 1989
Filed:
Jul. 02, 1987
John F Graham, Woodlands, TX (US);
Other;
Abstract
A musical training device for stringed instruments having a neck with a fret board includes a fret support plate that extends over the instrument neck and includes regularly spaced transverse raised frets defining therebetween spaces receptive of the musician's fingers. A matrix of thin lights displayed upon the fret board are contained within the fret board and include electroluminescent flat light displays viewable from a wide angle and under ambient lighting conditions and capable of indicating the actual musical note of each position at each position, each comprising at least in part a phosphor layer and an electrode for applying an electric field across the phosphor layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile