Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5285568 | Apparatus for the automatic installation of expander rings into split piston rings | Reiner Kierst | 1994-02-15 |
| 4282784 | Method and lathe for machining out-of-round circumferences | Otto Feller, Heinz Oepen, Manfred Kuhl, Alois Skrobek, Horst Bornefeld +1 more | 1981-08-11 |