Ying Chi Hong

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Causeway Bay, HK

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Patents Grantslast 30 patents

Information Patent Grant
Pressure gauge
- Patent number 9,021,886
- Issue date May 5, 2015
- Active Tools International (HK) Ltd.
- Ying Chi Hong
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Piezometer
- Publication number 20150033867
- Publication date Feb 5, 2015
- Active Tools International (HK) Ltd
- Ying Chi Hong
- G01 - MEASURING TESTING