Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D307020 | Drill bit | Hans Tronstad | 1990-04-03 |
| 4688273 | Sanitary system for supply of hot and cold water, and thermostatically controlled valve for such system | — | 1987-08-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D307020 | Drill bit | Hans Tronstad | 1990-04-03 |
| 4688273 | Sanitary system for supply of hot and cold water, and thermostatically controlled valve for such system | — | 1987-08-25 |