Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5649815 | Hydraulic machine and method of producing the contour of a gearwheel of a hydraulic machine | Hans Christian Petersen | 1997-07-22 |
| 5628626 | Hydraulic Machine | — | 1997-05-13 |
| 5595479 | Hydraulic machine having teeth formed by rollers | Hans Christian Petersen | 1997-01-21 |