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:
Mar. 23, 1976
Filed:
Mar. 13, 1975
Applicant:
Inventor:
Juan M del Castillo, Mexico City, 20, MX;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04F / ; G10G / ;
U.S. Cl.
CPC ...
84484 ;
Abstract
An optical metronome with a transparent continuous belt carrying vertical markings carried between rollers, supported between rigid transparent plates, and passing behind a translucent sheet of music through which the vertical markings are viewed. The lighting behind the belt is from horizontally extending tube type lamps and reflectors, or flat faced neon lamps which form one of said rigid transparent supporting plates with their flat faces.