Chih-Hung Wang

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Sealing disc for sealing vacuum valve
- Patent number D998758
- Issue date Sep 12, 2023
- Xiao Hu
- D23 - Environmental heating and cooling
Information Patent Grant
Sealing disc for vacuum closure
- Patent number 11,092,244
- Issue date Aug 17, 2021
- Xiao Hu
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...