Alphabet teaching device

Details Alphabet teaching device Alphabet teaching device

2006-10-10

2006-10-10

Delehanty, Robert A. (Department: 2914)

Office supplies; artists and teachers materials

Teaching material

Demonstrator or exhibitor

Design Patent

active

D0529961

CLAIM:
The ornamental design for an “alphabet teaching device,” as shown and described.

REFERENCES:
patent: 4003144 (1977-01-01), Maddestra et al.
patent: 4222181 (1980-09-01), Cummings
patent: 4345902 (1982-08-01), Hengel
patent: 4988321 (1991-01-01), Goldfarb
patent: 5354224 (1994-10-01), Ishiyama
patent: 5553856 (1996-09-01), Barnard
patent: 5554062 (1996-09-01), Goldsen
patent: D388818 (1998-01-01), Bajic et al.
patent: 5833465 (1998-11-01), Jarzewiak
patent: 6074212 (2000-06-01), Cogliano

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