Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4761997 | Ground water well dimensioning procedure | Risto Reijonen | 1988-08-09 |
| 4495991 | Procedure for drawing water from a ground water store | — | 1985-01-29 |
| RE31347 | Procedure for separating and recovering marsh gas | Rudolf H. Martinell, Rolf O. Hallberg | 1983-08-16 |
| 4187148 | Procedure for separating and recovering marsh gas | — | 1980-02-05 |