Title:
PROGRAMMED MUSICAL INSTRUMENT
United States Patent 3420135
Inventors:
Wolf, Tobin
Publication Date:
01/07/1969
Export Citation:
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Assignee:
GILBERT CO A C
Primary Class:
84/478
Other Classes:
84/404, 84/479A
International Classes:
A63H5/00; G05B19/12; G06K19/067; G09B15/08; G10D13/08; G10G1/02; (IPC1-7): G09B15/08
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US Patent References:
2897712Educational keyboard musical instrument
2811072Educational piano
2792739Indicating musical instrument and tune card therefor
1733477Instruction device for musical instruments
1607226Music-teaching device




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