Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4509680 | Method for combined utilization of heat-conveying media such as ground water or surface water or the like as a heat source | — | 1985-04-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4509680 | Method for combined utilization of heat-conveying media such as ground water or surface water or the like as a heat source | — | 1985-04-09 |