Akio Fujii

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Patents Grantslast 30 patents

Information Patent Grant
Magnetic sealing device for use between first and second magnetic m...
- Patent number 5,161,902
- Issue date Nov 10, 1992
- Nippon Seiko Kabushiki Kaisha
- Akio Fujii
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...