Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4924632 | Circular grinding machine | Lutz-Peter Heerdt, Roland Schemel | 1990-05-15 |
| 4780951 | Apparatus for changing tools in grinding machines and the like | Lutz-Peter Heerdt, Roland Schemel | 1988-11-01 |
| 4690038 | Hydraulically actuated piston machine with bearing for connecting piston to piston rod | Jurgen Klie | 1987-09-01 |
| 4685251 | Apparatus for indexing turrets for tools in grinding machines and the like | Lutz-Peter Heerdt, Roland Schemel | 1987-08-11 |
| 4675976 | Grinding machine with facilities for storage of spare work holders and tools | Lutz-Peter Heerdt, Roland Schemel | 1987-06-30 |
| 4644700 | Tailstock for universal grinding machines | Lutz-Peter Heerdt, Roland Schemel | 1987-02-24 |