Guitar string tuning machine

Description

FIG. 1 is a top plan view of a guitar string tuning machine showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a bottom plan view;

FIG. 4 is a left side elevational view;

FIG. 5 is a right side elevational view; and

FIG. 6 is a rear elevational view.

Referenced Cited
U.S. Patent Documents
D210981 May 1968 Thompson
D216049 November 1969 Dreyer
D249583 September 19, 1978 Worthing et al.
2771808 November 1956 Jenkins
4098163 July 4, 1978 Kato
Patent History
Patent number: D256471
Type: Grant
Filed: Sep 29, 1977
Date of Patent: Aug 19, 1980
Inventor: Robert J. Spercel (Cleveland, OH)
Primary Examiner: Joel Stearman
Assistant Examiner: Jane E. Corrigan
Attorney: Herman J. Yount
Application Number: 5/838,115
Classifications
Current U.S. Class: Element Or Attachment (D17/20)
International Classification: D1703;