Musical instrument keyboard

Details Musical instrument keyboard Musical instrument keyboard

1974-11-20

1980-10-14

Franklin, Lawrence R.

Music

Instruments

General features

G10C 312

Patent

active

042274362

ABSTRACT:
A novel keyboard for use on pianos, organs and the like comprising two confronting sets of keys, each key having a widened main part and a narrow extension, the two sets of keys being arranged with their main parts in confronting relation and with their extensions interleaved therebetween.

REFERENCES:
patent: 281898 (1883-07-01), McChesney
patent: 334484 (1886-01-01), Stewart
patent: 1680582 (1928-08-01), Zidell
patent: 1958227 (1934-05-01), Barnett
patent: 2417639 (1947-03-01), Firestone
patent: 2611291 (1952-09-01), Heim

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