Piano

Details Piano Piano

1998-03-27

1998-12-01

Hyder, Philip S.

Musical instruments

Keyboard type

Piano or cabinet therefor

1701

Patent

active

D04019628

REFERENCES:
patent: D146243 (1947-01-01), Zaiser
patent: D152089 (1948-12-01), Kapphan
patent: D341371 (1993-11-01), Wong
patent: D346394 (1994-04-01), Cattaneo
patent: 3969970 (1976-07-01), Swift et al.

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