Muscle testing machine

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Description

FIG. 1 is a perspective view of a muscle testing machine showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
D211831 July 1968 Berne
3752144 August 1973 Weigle, Jr.
4720093 January 19, 1988 Del Mar
4732038 March 22, 1988 Del Giorno et al.
4802462 February 7, 1989 Reiss et al.
Patent History
Patent number: D321023
Type: Grant
Filed: Oct 21, 1988
Date of Patent: Oct 22, 1991
Inventor: David R. Schultz (Richmond, CA)
Primary Examiner: Charles A. Rademaker
Attorney: Donald L. Beeson
Application Number: 7/260,487
Classifications
Current U.S. Class: D21/191