Keyboard

Details Keyboard Keyboard

1988-02-05

1989-06-20

Franklin, Lawrence R.

Music

Instruments

General features

84438, 84452P, G10C 312

Patent

active

048401048

ABSTRACT:
A keyboard for a musical instrument is composed of a resin composition, having a durometer hardness of 82 or larger, and the composition comprises a cellulose derivative resin and a silica having 3.0 or less silanol groups in the area of 100 square angstrom and a BET specific surface area of 10 to 210 m.sup.2 /g. It may comprises a substrate and the keyboard.

REFERENCES:
patent: 251212 (1881-12-01), French
patent: 274328 (1883-03-01), Hoggson et al.
patent: 3032455 (1962-05-01), Fauser
patent: 3060074 (1962-10-01), Good
patent: 4346639 (1982-08-01), Vagias

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