Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5277252 | Sampling tool for obtaining samples of fluids present in a well | — | 1994-01-11 |
| 4889197 | Hydraulic operated underreamer | — | 1989-12-26 |
| 4846364 | Transportation container for fluid/gas samples | — | 1989-07-11 |
| 4493368 | Helical flow heat exchanger having individually adjustable baffles | Rolf Gronnerud | 1985-01-15 |