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. 09, 1976
Filed:
Nov. 15, 1974
Applicant:
Inventor:
Juan M del Castillo, Mexico City, MX;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10G / ; G04F / ;
U.S. Cl.
CPC ...
84484 ;
Abstract
An optical metronome having a belt moved at a speed set for the music with vertical lines on the belt passing behind a transparent sheet with musical notations thereon in timed relationship according to the speed at which the notes are to be played.