Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5521474 | Method for monitoring movable elements | — | 1996-05-28 |
| 4682724 | Welding apparatus | — | 1987-07-28 |
| 4563264 | Method of dry distillation of volatile substances from mineral matter containing same | Hans-Jurgen Weiss, Roland Rammler, Ingo Dreher | 1986-01-07 |