Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9671308 | Method for helium mass spectrometric fine-leak test based on quantitative determination of maximum test-waiting time | Genglin Wang, Fei Li, Caiyi Wang, Ningbo Li, Liyan Wang +1 more | 2017-06-06 |