Hiroaki Takano

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Shizuoka, JP

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Patents Grantslast 30 patents

Information 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