Hisako Sawata

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Tsukuba-shi, Ibaragi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of purifying water for drink with solar light and heat and a...
- Patent number 4,978,458
- Issue date Dec 18, 1990
- Jitsuo Inagaki
- F24 - HEATING RANGES VENTILATING