Noboru Yamazumi

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Asahi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ferrofluid sealing device
- Patent number 6,305,694
- Issue date Oct 23, 2001
- Ferrotec Corporation
- Noboru Yamazumi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...