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US 4,308,784 AGranted
Ceramic parts for stringed musical instruments
OwnerThomas S. Eizonasinventor
Life of this patent
Estimating the term…
Abstract
An improved fret, nut and/or, bridge saddle for stringed instruments comprises a polished aluminum oxide ceramic. The ceramic of this invention is long lasting and provides improved tonal clarity, and can increase greatly the ease with which a strummed instrument can be played.
Claims10
A stringed musical instrument element, which comes in contact with the strings of said stringed musical instrument, said element being an aluminium oxide ceramic containing from about 75% to about 100% aluminum oxide, having a particle size of from about 5 to about 30 microns, and a Rockwell A hardness of at least about 60 to about 87.
Dependencies are inferred from the claim text.