Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5391338 | Manufacture of a carbon particle filter | Wolfgang Bandel, Helmut Daudel, Gerhard Griebling, Alfred Normann | 1995-02-21 |
| 4455724 | Casting machine for grids of lead storage batteries | Aloys Hennecke | 1984-06-26 |