Electronic detection unit for an educational instrument

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Description

FIG. 1 is a top plan view of an electronic detection unit for an educational instrument illustrating my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a back elevational view thereof.

Referenced Cited
U.S. Patent Documents
D197178 December 1963 Meuche
D240606 July 1976 Koenig
D275956 October 16, 1984 Culp
4467196 August 21, 1984 Balliet et al.
Patent History
Patent number: D288337
Type: Grant
Filed: Mar 29, 1984
Date of Patent: Feb 17, 1987
Assignee: Price/Stern/Sloan/Publishers, Inc. (Los Angeles, CA)
Inventor: Lawrence L. Sloan (Los Angeles, CA)
Primary Examiner: Louis S. Zarfas
Law Firm: Abelman Frayne Rezac & Schwab
Application Number: 6/594,725
Classifications
Current U.S. Class: Teaching Material (D19/59); D14/116