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Ryoichi Endoh
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Hamamatsu, JP
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last 30 patents
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Patent Grant
Apparatus for drilling pronunciation
Patent number
5,142,657
Issue date
Aug 25, 1992
Kabushiki Kaisha Kawai Gakki Seisakusho
Sadaaki Ezawa
G06 - COMPUTING CALCULATING COUNTING
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Patent Grant
Apparatus for drilling pronunciation
Patent number
4,969,194
Issue date
Nov 6, 1990
Kabushiki Kaisha Kawai Gakki Seisakusho
Sadaaki Ezawa
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS