Title:
Piano key balance
United States Patent 2509063


Inventors:
Howe, Alfred H.
Application Number:
US9454749A
Publication Date:
05/23/1950
Filing Date:
05/21/1949
Assignee:
Howe, Alfred H.
Primary Class:
Other Classes:
74/519, 84/434
International Classes:
G10C3/12
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US Patent References:
Foreign References:
DE145129C