Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4603734 | Heat exchange element of the air-tube type | Hermann Heeren | 1986-08-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4603734 | Heat exchange element of the air-tube type | Hermann Heeren | 1986-08-05 |