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:
Jan. 31, 1978
Filed:
Jun. 24, 1976
Applicant:
Inventor:
Juan M del Castillo, Mexico City 20, D.F., MX;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10B / ;
U.S. Cl.
CPC ...
84484 ; 84478 ; 8448 / ;
Abstract
An optical lighted metronome has a column of light projected onto a sheet of music by means of individual lamps passing light through lenses with the lights connected to illuminate successively by means of motor-driven contact arms or electronic circuitry.