Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10253968 | Push-button switch operating portion with diverging and converging lens | Zhi-Zeng Cheng, Jian Liu, Song Liu, Radek Melich, Hua Lang Wang +1 more | 2019-04-09 |
| 9711300 | Switch and button thereof | Zhong Hui Chen, Zhi-Zeng Cheng, Jian Liu, Rudolf Zimmermann | 2017-07-18 |