AUTOMATIC PLAYER FOR ELECTRONIC MUSICAL INSTRUMENT
United States Patent 3420940
US Patent References:
Vacuum switch
- - 3141056

Electronic tremolo device
- - 3267196

/3309454.html
- - 3309454


Inventors:
Glass, Ronald
Fuechsel, Charles F.
Publication Date:
01/07/1969
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Assignee:
Ronald, Glass
Charles, Fuechsel F.
Primary Class:
84/724
Other Classes:
84/639, 84/745, 250/566, 984/304, 327/514
International Classes:
G10H1/00; G10H3/06; G10F1/00




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