Tadashi Aoki

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Ohmiya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Fire safe butterfly valve
- Patent number 4,228,816
- Issue date Oct 21, 1980
- Jamesbury Corporation
- Tadashi Aoki
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Fire tested butterfly valve
- Patent number 4,202,365
- Issue date May 13, 1980
- Jamesbury Corporation
- Tadashi Aoki
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...