Office supplies; artists and teachers materials – Teaching material
Patent
1989-02-13
1992-06-30
Feifer, Melvin B.
Office supplies; artists and teachers materials
Teaching material
D21155
Patent
active
D03274993
REFERENCES:
patent: 1377261 (1921-05-01), McLain et al.
patent: 1864703 (1932-06-01), West
patent: 3365198 (1968-01-01), Hay
Montgomery Ward Xmas Cat., 1974, p. 308, lower left, item E, alphabet train.
Playthings, Mar. 1986, p. 79, Alphacritters.
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