Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10690258 | System and use method for valve controlled by sound | Richard Preston Riels | 2020-06-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10690258 | System and use method for valve controlled by sound | Richard Preston Riels | 2020-06-23 |