Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11339904 | Magnetic hose coupling for helmet forced air hose | William A. Hilgenberg, Allen Albert Bischofberger | 2022-05-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11339904 | Magnetic hose coupling for helmet forced air hose | William A. Hilgenberg, Allen Albert Bischofberger | 2022-05-24 |