Educational aide for teaching physical properties of light

- Xerox Corporation
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Description

FIG. 1 is a perspective view of the educational aide for teaching physical properties of light showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front plan view thereof;

FIG. 4 is a side plan view thereof;

FIG. 5 is a rear plan view thereof; and

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
2155114 April 1939 Black
Patent History
Patent number: D242793
Type: Grant
Filed: Jan 28, 1975
Date of Patent: Dec 21, 1976
Assignee: Xerox Corporation (Stamford, CT)
Inventor: Michael J. Kane (Chelmsford, MA)
Primary Examiner: Melvin B. Feifer
Attorney: James J. Ralabate
Application Number: 5/544,738
Classifications
Current U.S. Class: Demonstrator Or Exhibitor (10) (D19/62)
International Classification: D1907;