| Patents for G10G 1 - Means for the representation of music (990) |
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| 04/21/1988 | WO1988002911A1 Device for selecting and displaying music data sets (or scales) from an arrangement of music data |
| 03/16/1988 | CN87202156U Rotary tuneshift instrument of guitar |
| 03/15/1988 | US4730533 Electronic keyboard instrument |
| 02/10/1988 | CN86208431U Tone-colour counterpoint device for keyboard musical instrument |
| 01/14/1988 | WO1988000383A1 A musical calculator |
| 12/31/1987 | CN87208670U Guitar finger-board tone adjuster |
| 12/09/1987 | CN86205201U Sound and colour light synchronizer for keyboard musical instrument |
| 11/19/1987 | EP0245273A1 A chord key for musical instruments. |
| 11/03/1987 | US4703681 Key depression indicating device for electronic musical instrument |
| 10/28/1987 | EP0243036A1 Musical aid |
| 09/22/1987 | US4694723 Training type electronic musical instrument with keyboard indicators |
| 09/12/1987 | CN86207013U Temperament generating and analyzing device |
| 07/22/1987 | CN85203204U Keyboard for keyboard musical instrument |
| 06/09/1987 | US4671159 Chord key for musical instruments |
| 05/12/1987 | US4664010 Method and device for transforming musical notes |
| 05/06/1987 | EP0220423A2 Electronic keyboard musical instrument |
| 03/24/1987 | US4651612 Electronic musical instrument with play guide function |
| 03/03/1987 | EP0122276A4 Musical theory slide rule for stringed instruments. |
| 11/26/1986 | EP0108783B1 A string instrument of guitar type |
| 11/26/1986 | CN85203252U Music teaching apparatus for staff with key board tone-identifying |
| 09/30/1986 | US4614144 Music card system |
| 09/03/1986 | EP0192974A1 Key depression indicating device for electronic musical instrument |
| 08/26/1986 | CA1210261A1 String instrument of guitar type |
| 07/17/1986 | WO1986004177A1 A chord key for musical instruments |
| 09/25/1985 | EP0155448A2 Circuit for an electronic musical instrument |
| 09/25/1985 | EP0155409A1 System for the automatic production of graphic music originals |
| 09/10/1985 | US4539887 String instrument of guitar type |
| 06/12/1985 | EP0143824A1 Portable apparatus for transfer of data information from an exchangeable memory unit to a viewing screen |
| 06/05/1985 | EP0143578A2 Method and device for transforming musical notes |
| 05/08/1985 | EP0009714B1 Method and apparatus for converting acoustic signals into optic signals |
| 04/17/1985 | EP0137758A2 Music reproduction system including a music storage card |
| 04/10/1985 | EP0070293B1 Signal emitting device with adjustable beat frequency |
| 11/22/1984 | WO1984004613A1 Portable apparatus for transfer of data information from an exchangeable memory unit to a viewing screen |
| 10/24/1984 | EP0122276A1 Musical theory slide rule for stringed instruments |
| 10/02/1984 | US4474098 Signal emitting device with adjustable beat frequency |
| 08/07/1984 | CA1172072A1 Synchronizing signal generator and an electronic musical instrument using the same |
| 06/19/1984 | US4454797 Automatic music performing apparatus with intermediate span designating faculty |
| 05/23/1984 | EP0108783A1 A string instrument of guitar type. |
| 05/10/1984 | WO1984001845A1 Musical theory slide rule for stringed instruments |
| 04/24/1984 | US4444083 Keyboard instrument, especially a piano or similar instrument |
| 03/06/1984 | US4434698 Transposable sheet music |
| 01/31/1984 | US4428269 Chord teaching system and method for an electronic musical instrument |
| 12/13/1983 | US4419918 Synchronizing signal generator and an electronic musical instrument using the same |
| 11/24/1983 | WO1983004125A1 A string instrument of guitar type |
| 04/05/1983 | US4378720 Electronic musical instrument having musical performance training system |
| 03/29/1983 | US4378466 Conversion of acoustic signals into visual signals |
| 01/26/1983 | EP0070293A1 Signal emitting device with adjustable beat frequency. |
| 11/30/1982 | US4361067 Electronic musical instrument with keyboard |
| 08/25/1982 | EP0058339A1 Musical instrument with keyboard, in particular a piano or the like |
| 08/17/1982 | US4344344 Electronic musical instrument having musical performance training system |
| 08/05/1982 | WO1982002610A1 Signal emitting device with adjustable beat frequency |
| 06/01/1982 | CA1124903A1 Electronic display device for fretted stringed instruments |
| 04/06/1982 | US4322997 Keyboard |
| 03/02/1982 | US4317404 Musical rhythm pattern generator |
| 02/04/1982 | WO1982000379A1 Sound signal automatic detection and display method and system |
| 12/08/1981 | CA1113747A1 Electronic player piano with base and treble expression effects |
| 11/03/1981 | US4297934 Display device for automatic rhythm performance apparatus |
| 09/02/1981 | EP0034611A1 Method of representing sound by colour |
| 07/07/1981 | US4277090 Music scoring and musical staffs |
| 06/03/1981 | EP0029463A1 A guitar chords slide rule device |
| 03/25/1981 | EP0025462A1 Automatic visual teaching device for the learning of music or component parts thereof |
| 03/24/1981 | US4257306 Electronic display device for fretted stringed instruments |
| 03/05/1981 | WO1981000637A1 Method of representing sound by colour |
| 03/03/1981 | CA1096609A1 Electronic keyboard display device |
| 09/30/1980 | CA1086540A1 Keyboard and notation system |
| 09/23/1980 | CA1086053A1 Metronome for designating visually the note of music to be played |
| 04/16/1980 | EP0009714A2 Method and apparatus for converting acoustic signals into optic signals |
| 01/22/1980 | CA1070109A1 Teaching device for attachment to an organ |
| 01/15/1980 | US4183276 Pedal teaching aid for an electronic musical instrument |
| 12/04/1979 | US4176578 System for encoding of bass and treble expression effects while recording from the keyboard of an electronic player piano |
| 08/07/1979 | US4163409 Optical metronomes |
| 08/07/1979 | CA1059756A1 Optical metronome |
| 08/07/1979 | CA1059755A1 Music teaching and computation device |
| 05/23/1978 | US4090355 Electronic metronome |
| 04/04/1978 | US4082029 Optical metronomes |
| 03/28/1978 | US4080867 Electronic display system for musical instruments |
| 01/24/1978 | US4069735 Music teaching and computation device |
| 12/27/1977 | US4064782 Electronic music display device |
| 09/13/1977 | US4048634 Electronic keyboard display device |
| 07/26/1977 | US4037518 Musical chord and note calculator |
| 07/26/1977 | US4037511 Teaching device for attachment to an organ |
| 06/28/1977 | US4031797 Pocket-size musical chord study aid |
| 05/17/1977 | US4023460 Intonation aid for the violin, viola and cello and other instruments of the violin family |
| 05/10/1977 | US4022097 Computer-aided musical apparatus and method |
| 09/07/1976 | US3978757 Instructional display device operated responsive to the playing of stringed musical instruments |
| 08/31/1976 | US3977293 Left hand chord locator |
| 08/17/1976 | US3974733 Fifth chords indicating and music teaching device |
| 06/01/1976 | US3960046 Music teaching device |
| 04/13/1976 | US3949640 Musical chords teaching and indicating devices |
| 02/10/1976 | US3937118 Inversion sliderule |