Shigenobu Nagasawa

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Minori-machi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of operating pump and bearing device for pump
- Patent number 5,639,165
- Issue date Jun 17, 1997
- Hitachi, Ltd.
- Kohji Aizawa
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...