Mao YANG

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Wenzhou, CN

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Patents Grantslast 30 patents

Information Patent Grant
Stem shoulder seal with double rings and an assembly of independent...
- Patent number 8,439,330
- Issue date May 14, 2013
- Zhejiang China Value Co., Ltd.
- Changxiang Xu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
STEM SHOULDER SEAL WITH DOUBLE RINGS AND AN ASSEMBLY OF INDEPENDENT...
- Publication number 20110297863
- Publication date Dec 8, 2011
- ZHEJIANG CHINA VALVE CO., LTD.
- Changxiang XU
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...