Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE35519 | Method and apparatus for smooth-rolling and deep-rolling multi-stroke crankshafts | — | 1997-05-27 |
| 5138859 | Method and apparatus for smooth-rolling and deep-rolling multi-stroke crankshafts | — | 1992-08-18 |
| 4766753 | Rolling apparatus for surface hardening or smoothing | Garri Berstein, Willi Hansen | 1988-08-30 |
| 4747285 | Surface-hardening or smoothing rolling machine | Garri Berstein, Willi Hansen | 1988-05-31 |
| 4747286 | Rolling apparatus | Garri Berstein, Willi Hansen | 1988-05-31 |
| 4539831 | Method for setting the stroke of movable rolling units, and crankshaft rolling machine for implementing said method | Garri Berstein, Willi Hansen | 1985-09-10 |