Student-programmable educational instrumentation device

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Description

FIG. 1 is a perspective view of the student-programmable educational instrumentation device showing my new design.

FIG. 2 is a rear view in elevation of the device of FIG. 1.

FIG. 3 is a right side view in elevation of the device of FIG. 1.

FIG. 4 is a bottom view of the device of FIG. 1.

Referenced Cited
U.S. Patent Documents
D201885 August 1965 Pezely, Jr. et al.
3982764 September 28, 1976 Dieball
Patent History
Patent number: D247363
Type: Grant
Filed: May 7, 1976
Date of Patent: Feb 28, 1978
Inventor: Leonard Hughes (Oakland, CA)
Primary Examiner: Melvin B. Feifer
Attorney: Robert E. Wickersham
Application Number: 5/684,100
Classifications
Current U.S. Class: Sensory Feedback, E.g., Audio-visual Teaching Machine (D19/60)
International Classification: D1907;