Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874578 | Aluminium alloy for superplastic forming | Heinrich Homberger, Pedro Rodriques | 1989-10-17 |
| 4806211 | Aluminum alloy product with uniformly grey, light-fast surface and process for its manufacture | Jean-Francois Paulet, Jorg Maier | 1989-02-21 |
| 4802935 | Substrate for a lithographic printing plate | Theodore J. Crona, Heinz Bichsel | 1989-02-07 |
| 4800950 | Process for manufacturing a substrate for a lithographic printing plate | Theodore J. Crona, Heinz Bichsel | 1989-01-31 |