Mathematical instructional aide device

Details Mathematical instructional aide device Mathematical instructional aide device

2001-06-21

2003-03-04

Aronovich, Adir (Department: 2912)

Office supplies; artists and teachers materials

Teaching material

CD19S062000

Design Patent

active

D0471235

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

REFERENCES:
patent: 3624928 (1971-12-01), Felton
patent: 4360347 (1982-11-01), Ghaznavi
patent: D392674 (1998-03-01), Perez
patent: D395675 (1998-06-01), Perez
patent: 5827067 (1998-10-01), Perez

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