| Outline |
Indent Level
| |
| Color | Curly Brackets (indicating CPC extensions to IPC) | |
CPC | COOPERATIVE PATENT CLASSIFICATION | ||
![]() |
![]() | General design |
![]() | Details or accessories |
G10C 3/02 | . | Cases |
G10C 3/04 | . | Frames; Bridges; Bars |
G10C 3/06 | . | Resonating means, e.g. resonant strings, soundboards; Fastenings of the resonating means |
G10C 3/08 | . | Arrangements of strings |
![]() | . | Tuning pins or straining devices |
G10C 3/103 | . . | { the axis of the pins being parallel to the string} |
G10C 3/106 | . . | { the axis of the pins being perpendicular to the string} |
![]() | G10C 3/12 | . | Keyboards; Keys |
G10C 3/125 | . . | { Materials or treatment of materials for the manufacturing of keys} |
G10C 3/14 | . . | for actuation by the feet |
![]() | G10C 3/16 | . | Actions |
![]() | G10C 3/161 | . . | { specially adapted for upright pianos} |
G10C 3/165 | . . | { for plucking the strings, i.e. for instruments covered by group G10C 1/06 (plucking mechanisms for keyboard-operated zithers G10D 3/085)} |
G10C 3/166 | . . |
G10C 3/168 | . . | { with a hanging jack, i.e. jack connected to hammer-butt or hammer-shank} |
G10C 3/18 | . . | Hammers |
G10C 3/20 | . . | involving the use of hydraulic, pneumatic, or electromagnetic means |
![]() | G10C 3/22 | . . | { specially adapted} for grand pianofortes |
G10C 3/225 | . . . | { the actions, in particular the hammers, being mounted above the strings, i.e. hammers hitting downwards} |
G10C 3/24 | . . |
G10C 3/26 | . | Pedals or pedal mechanisms for half-blow or similar sound modifying |
G10C 3/28 | . | Transposing devices |
G10C 3/30 | . | Couplers, e.g. for playing octaves |
![]() | Combinations with other musical instruments, e.g. with bells or xylophones |
G10C 9/00 | Methods or tools specially adapted for the manufacture or maintenance of musical instruments covered by this subclass |