| IPC 7 English version |
| G10C-G10C00900 |
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| SECTION G – PHYSICS |
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| G 10 | MUSICAL INSTRUMENTS; ACOUSTICS |
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| G 10 C | PIANOS (non-musical aspects of toy pianos A63H 5/00; aspects of automatic actuation G10F; combinations of microphones, pick-ups or amplifiers with musical instruments G10H) |
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1/ | 00 | General design of pianos or like stringed musical instruments with keyboard |
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1/ | 02 | . | of upright pianofortes |
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1/ | 04 | . | of grand pianofortes |
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1/ | 06 | . | of cembaloes, spinets, or similar stringed instruments |
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3/ | 00 | Details of, or accessories for, pianos or the like |
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3/ | 02 | . | Cases |
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3/ | 04 | . | Frames; Bridges; Bars |
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3/ | 06 | . | Resonating means, e.g. resonant strings, soundboards; Fastenings of the resonating means |
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3/ | 08 | . | Arrangements of strings |
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3/ | 10 | . | Tuning pins or straining devices |
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3/ | 12 | . | Keyboards; Keys |
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3/ | 14 | . | . | for actuation by the feet |
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3/ | 16 | . | Actions |
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3/ | 18 | . | . | Hammers |
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3/ | 20 | . | . | involving the use of hydraulic, pneumatic, or electromagnetic means |
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3/ | 22 | . | . | for grand pianofortes |
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3/ | 24 | . | . | for reciprocating of tremolo |
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3/ | 26 | . | Pedals or pedal mechanisms for half-blow or similar sound-modifying |
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3/ | 28 | . | Transposing devices |
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3/ | 30 | . | Couplers, e.g. for playing octaves |
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5/ | 00 | Combinations of pianos with other musical instruments, e.g. with bells, with xylophone |
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9/ | 00 | Special tools or methods for the manufacture or maintenance of pianos |
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