Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4745906 | Passive heat transfer device | Rudolf Friesen | 1988-05-24 |
| 4467862 | Device for passive heat transport and integrated solar collector incorporating same | — | 1984-08-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4745906 | Passive heat transfer device | Rudolf Friesen | 1988-05-24 |
| 4467862 | Device for passive heat transport and integrated solar collector incorporating same | — | 1984-08-28 |