Toshihiro Koyama

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Saitama-ken, JP

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Patents Grantslast 30 patents

Information Patent Grant
Control apparatus for ventilating a tunnel
- Patent number 6,724,917
- Issue date Apr 20, 2004
- Kabushiki Kaisha Toshiba
- Hiroyuki Ohashi
- F24 - HEATING RANGES VENTILATING