Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6847033 | Method and device for quickly and continually detecting changes in the concentration of radon gas that is dissolved in water | Klaus Freyer, Gunther Just | 2005-01-25 |
| 6498341 | Method for characterizing ground water measurement points by distinguishing ground water from subterranean water accumulation | Joerg Dehnert, Klaus Freyer, Wolfgang Nestler | 2002-12-24 |
| 6232598 | Process and devices for characterizing ground water measurement points by distinguishing ground water from subterranean water accumulation | Joerg Dehnert, Klaus Freyer, Wolfgang Nestler | 2001-05-15 |