Title:
Electronic musical instrument with photoelectric switching
United States Patent 3011379


Inventors:
Corwin, Merton D.
Application Number:
US63838657A
Publication Date:
12/05/1961
Filing Date:
02/05/1957
Assignee:
BALDWIN PIANO COMPANY
Primary Class:
Other Classes:
84/639, 84/745, 84/DIG.19, 250/208.4, 250/229, 250/239, 361/761, 439/56, 984/318
International Classes:
G10H1/055; H05K1/18; H05K3/30; H05K3/32
View Patent Images:
US Patent References:
Foreign References:
IT413804B
FR1022320A1953-03-03
CA516184A1955-08-30