Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5638153 | Masking of transparencies for copying | Friedrich Jacob, Eberhard Schulz | 1997-06-10 |
| 5613359 | Method and apparatus for reducing hydrocarbon emissions for an internal combustion engine | Gunter Loose, Erwin Strohmer | 1997-03-25 |