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Keyboard lid, its open-close structure and arm members for keyed

Music – Instruments – Stringed
Patent

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Keyboard musical instrument

Music – Instruments – Stringed
Patent

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Keyboard musical instrument

Music – Instruments – General features
Reexamination Certificate

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Keyboard musical instrument

Music – Instruments – General features
Patent

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Keyboard musical instrument

Music – Instruments
Patent

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Keyboard musical instrument

Music – Instruments – Stringed
Patent

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Keyboard musical instrument

Music – Instruments
Patent

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Keyboard musical instrument

Music – Instruments – Stringed
Patent

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Keyboard musical instrument

Music – Instruments – General features
Reexamination Certificate

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Keyboard musical instrument allowing player to perform ensemble

Music – Instruments – Electrical musical tone generation
Patent

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Keyboard musical instrument and action unit incorporated...

Music – Instruments – Stringed
Reexamination Certificate

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Keyboard musical instrument and improved piano

Music – Instruments – Stringed
Patent

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Keyboard musical instrument and information processing...

Music – Instruments – General features
Reexamination Certificate

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Keyboard musical instrument and other-type musical...

Music – Instruments – Electrical musical tone generation
Reexamination Certificate

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Keyboard musical instrument and recorder/playback controller inc

Music – Instruments – Electrical musical tone generation
Patent

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Keyboard musical instrument equipped with automatic player...

Music – Instruments – Automatic
Reexamination Certificate

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Keyboard musical instrument equipped with automatic top...

Music – Instruments – Stringed
Reexamination Certificate

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Keyboard musical instrument equipped with driving unit for hamme

Music – Instruments – Combined
Patent

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Keyboard musical instrument equipped with electromagnetic key to

Music – Instruments – Electrical musical tone generation
Patent

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Keyboard musical instrument equipped with hammer sensors changin

Music – Instruments – Combined
Patent

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