Teaching aid for learning to tell time

Details Teaching aid for learning to tell time Teaching aid for learning to tell time

2001-04-27

2002-09-03

Holtje, Martie K. (Department: 2912)

Office supplies; artists and teachers materials

Teaching material

Demonstrator or exhibitor

CD19S062000, CD10S006000, CD10S128000

Design Patent

active

D0462389

CLAIM:
The ornamental design for a “teaching aid for learning to tell time”, substantially as shown and described.

REFERENCES:
patent: D42558 (1912-05-01), Wright
patent: D123782 (1940-12-01), Lux
patent: D162488 (1951-03-01), Spier
patent: D164602 (1951-09-01), Punzak
patent: 2567497 (1951-09-01), Sorensen
patent: 3034229 (1962-05-01), Kessler
patent: 5030104 (1991-07-01), Caldwell
patent: D416813 (1999-11-01), Wright et al.
patent: D438805 (2001-03-01), Leykekmhakher et al.

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