Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4460389 | Device for filtering dust extracted from factory buildings | Theodor Schaffer | 1984-07-17 |
| 4239190 | Structure for collecting exhaust gases from a converter | — | 1980-12-16 |
| 4190237 | Apparatus for treating refinery waste gases | — | 1980-02-26 |