Tack Ching Wun

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Ngau Chi Wan, HK

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Patents Grantslast 30 patents

Information Patent Grant
Vacuum tube high fidelity headphone
- Patent number 9,685,917
- Issue date Jun 20, 2017
- WATA Electronics Co., LTD
- Tack Ching Wun
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
In-Ear Headphone For Gaming, High Fidelity Music and 3D Effect
- Publication number 20180007461
- Publication date Jan 4, 2018
- Tack Ching Wun
- G10 - MUSICAL INSTRUMENTS ACOUSTICS