Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4207457 | Porcupine wire coil electric resistance fluid heater | John H. Haglund | 1980-06-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4207457 | Porcupine wire coil electric resistance fluid heater | John H. Haglund | 1980-06-10 |