Title:
Attachment for automatically playing root tones of chords in bass section of organ
United States Patent 3001432
US Patent References:
Key-coupler for organs
- - 1376682
Musical instrument
- - 2045172
Musical instrument
- - 2293499
Electrical musical instrument
- - 2301871
Musical instrument
- - 2422940
Key-coupler for organs
- - 1376682
Musical instrument
- - 2045172
Musical instrument
- - 2293499
Electrical musical instrument
- - 2301871
Musical instrument
- - 2422940
Inventors:
Greif, Jean A.
Publication Date:
09/26/1961
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Export Citation:
Assignee:
Greif, Jean A.
Primary Class:
Other Classes:
84/715, 84/719, 984/349, 84/DIG.022
International Classes:
G10H1/38
US Patent References:
| 2562670 | Musical instrument |
Foreign References:
| DE630202C |