Mathematical instructional aide device

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Description

FIG. 1 is a front, top respective view of a mathematical instruction aide device showing the new design;

FIG. 2 is a reduced top plan view thereof;

FIG. 3 is a reduced front elevational view thereof; and,

FIG. 4 is a reduced left side elevational view thereof.

Claims

The ornamental design for mathematical instructional aide device, as shown and described.

Referenced Cited
U.S. Patent Documents
3624928 December 1971 Felton
4360347 November 23, 1982 Ghaznavi
D392674 March 24, 1998 Perez
D395675 June 30, 1998 Perez
5827067 October 27, 1998 Perez
Patent History
Patent number: D471235
Type: Grant
Filed: Jun 21, 2001
Date of Patent: Mar 4, 2003
Assignee: Evan McKenna Foundation (Woodside, CA)
Inventor: Kay Perkins Emerson (Woodside, CA)
Primary Examiner: Adir Aronovich
Attorney, Agent or Law Firm: Gray Cary Ware & Freidenrich LLP
Application Number: 29/143,929
Classifications
Current U.S. Class: Teaching Material (D19/59); Demonstrator Or Exhibitor (10) (D19/62)
International Classification: 1907;