Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4452303 | Device and a method for recovering heat from the soil | Theodorus P. M. Bontje, Gerrit H. Heetbrink, Warner Jan de Putter, Bernardus Henricus Kok | 1984-06-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4452303 | Device and a method for recovering heat from the soil | Theodorus P. M. Bontje, Gerrit H. Heetbrink, Warner Jan de Putter, Bernardus Henricus Kok | 1984-06-05 |