Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11497945 | Pressure regulator assembly and bypass assembly for a self-contained breathing apparatus | Longteng Yu, Lida Zhu, Wolfgang Heinz Adolf Kirchner | 2022-11-15 |
| 11298571 | Pressure regulator assembly and bypass assembly for a self-contained breathing apparatus | Longteng Yu, Lida Zhu, Wolfgang Heinz Adolf Kirchner | 2022-04-12 |