Masayasu Okada

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Hitachi, JA

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Patents Grantslast 30 patents

Information Patent Grant
Method of starting operation for a pump or a pump turbine
- Patent number 3,960,463
- Issue date Jun 1, 1976
- Hitachi, Ltd.
- Masayasu Okada
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...