FIELD: musical instruments. SUBSTANCE: device has at least two additional key sets. EFFECT: facilitated performance. 6 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MUSICAL INSTRUMENT | 2024 |
|
RU2824536C1 |
| ELECTRIC MUSICAL INSTRUMENT | 1996 |
|
RU2111551C1 |
| ELECTRONIC MUSICAL KEYBOARD INSTRUMENT "MAXBOX" | 2012 |
|
RU2520014C1 |
| FOOT-OPERATED KEYBOARD "GRAND-PEDAL" | 2001 |
|
RU2200350C2 |
| ACCORDION | 1994 |
|
RU2092908C1 |
| 0 |
|
SU1778778A1 | |
| KEYBOARD MUSICAL INSTRUMENT AND METHOD FOR TEACHING TO PLAY IT | 2013 |
|
RU2544135C1 |
| METHOD FOR EMITTING OF SOUND FROM LINGUAL PNEUMATIC INSTRUMENT WITH SELECTIVE KEY MECHANISM | 2000 |
|
RU2171504C1 |
| FINGER-BOARD ELECTROMUSICAL INSTRUMENT, TUNE OSCILLATOR AND OPTO-ISOLATOR LOUDNESS PEDAL | 2003 |
|
RU2249859C2 |
| CONCERT ACCORDION | 1996 |
|
RU2126179C1 |
