Chang Ying-Ying

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Taipei City, TW

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Patents Applicationslast 30 patents

Information Patent Application
Leak-proof structure of oil pipe connector
- Publication number 20100187807
- Publication date Jul 29, 2010
- BISON INC.
- Chang Ching-Ching
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...