Issued Patents 2016
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9302062 | Adjustable and biased-open unidirectional speaking valve | Thomas M. Root | 2016-04-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9302062 | Adjustable and biased-open unidirectional speaking valve | Thomas M. Root | 2016-04-05 |