Katsumi Onizuka

Follow

Person

Osaka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Valve operating mechanism
- Patent number 5,397,221
- Issue date Mar 14, 1995
- Yamamoto Suiatu Kogyosho Co., Ltd.
- Katsumi Onizuka
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method and apparatus for performing a hydraulic pressure test on a...
- Patent number 4,502,323
- Issue date Mar 5, 1985
- KK Yamamoto Suiatsu Kogyosho
- Tosio Watase
- G01 - MEASURING TESTING