Educational spinning board game

Office supplies; artists and teachers materials – Teaching material – Demonstrator or exhibitor

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D03476561

REFERENCES:
patent: D195579 (1963-07-01), Ruderian
patent: D268686 (1983-04-01), Wolf
patent: D276443 (1984-11-01), Sperti
patent: 1579341 (1926-04-01), Allen
patent: 2102535 (1937-12-01), Johnson
patent: 2283583 (1942-05-01), Singer
patent: 2370229 (1945-02-01), Buckley
patent: 4326711 (1982-04-01), Giallombardo
patent: 5133666 (1992-07-01), Levy

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