Pyramid math star game board

Games – toys – and sports goods – Toy – Representation or scale model

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D21 25

Patent

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D03563430

REFERENCES:
patent: D28775 (1898-05-01), Gatewood
patent: D31613 (1899-10-01), Schultze
patent: D67734 (1925-07-01), Andrews
patent: D119505 (1940-03-01), Roth
patent: D135351 (1943-03-01), Van Horn
patent: D155766 (1949-11-01), Anderson et al.
patent: D299363 (1989-01-01), Brooks
patent: 818409 (1906-04-01), Bolton
patent: 1953631 (1934-04-01), Pritzkow
Hong Kong Toys 1985, p. 306 "Star Game".

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