Grand piano

Musical instruments – Keyboard type – Piano or cabinet therefor

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Patent

active

D03180590

REFERENCES:
patent: D64464 (1924-04-01), Lehr
patent: D113631 (1939-03-01), Gugler
patent: D219404 (1970-12-01), White
patent: D246142 (1977-10-01), Heumann
patent: 3969970 (1976-07-01), Swift et al.
Housewares Review, Jan. 1962, p. 154.

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