Piano lid height adjuster block

Details Piano lid height adjuster block Piano lid height adjuster block

1982-09-29

1985-02-26

Ansher, Bernard

Musical instruments

Keyboard type

Element or attachment

Patent

active

D02777649

REFERENCES:
patent: 1984393 (1934-12-01), Brown
patent: 3162973 (1964-12-01), Christiansen
patent: 3546792 (1970-12-01), Sherman
patent: 3819188 (1974-06-01), Freedman

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