Patented in 1953 by Robert Keaton, it's an improved version from an earlier model (also patented in 1936).
Its name says it all: it allowed typing music notation in a mechanized (and with higher quality) way.
2015 • 02 • 04
Patented in 1953 by Robert Keaton, it's an improved version from an earlier model (also patented in 1936).
Its name says it all: it allowed typing music notation in a mechanized (and with higher quality) way.