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:
Aug. 07, 1979
Filed:
Dec. 09, 1977
Applicant:
Inventors:
David O Rumer, Jr, Rockford, IL (US);
Donald J Findlay, Wheeling, IL (US);
Arthur E Neumann, Winnetka, IL (US);
Juan M DEL Castillo, Mexico City, MX;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04F / ;
U.S. Cl.
CPC ...
84484 ; 340706 ;
Abstract
An optical metronome using sheets of music of non-sagging sheets of translucent material with notes spaced according to their value and vertically aligned measures on a display panel of light columns formed of vertical bars of triangular cross-section in white reflectors with an angular air gap and a light source for each bar. Circuitry coordinates sequential lighting of the bars in proper musical tempo and properly placed downbeat and is also attached or attachable to electronic organ circuitry or stands alone with automatic turn-off of lights to the bars if organ not counting.