Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Marvin Scott Jones0
Date of Patent
December 7, 2010
0Patent Application Number
124543580
Date Filed
May 18, 2009
0Patent Primary Examiner
Patent abstract
A series of adjustable springs, rigidly suspended above the keys of a piano, provides a downward force which reduces the effort needed to depress the keys. Precise adjustment of the series, and its attachment to the piano are facilitated through the use of existing fastener hardware within the conventional piano architecture.
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