Atuyumi Ishikawa

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Patents Grantslast 30 patents

Information Patent Grant
Heat exchanger having corrugated fins and air conditioner having th...
- Patent number 5,775,413
- Issue date Jul 7, 1998
- Sanyo Electric Co., Ltd.
- Takashi Kawanabe
- F24 - HEATING RANGES VENTILATING
Information Patent Grant
Heat exchanger
- Patent number 4,909,319
- Issue date Mar 20, 1990
- Sanyo Electric Co., Ltd.
- Atuyumi Ishikawa
- F28 - HEAT EXCHANGE IN GENERAL