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Naoya Tetsumura
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Hamamatsu, JP
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last 30 patents
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Patent Grant
Keyboard musical instrument having an improved cover opening/closin...
Patent number
5,973,241
Issue date
Oct 26, 1999
Yamaha Corporation
Naoya Tetsumura
G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information
Patent Grant
Electronic musical instrument having plural component blocks
Patent number
4,936,185
Issue date
Jun 26, 1990
Yamaha Corporation
Yorihisa Yamaguchi
G10 - MUSICAL INSTRUMENTS ACOUSTICS