Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5071508 | Method of and arrangement for etching an etch material consisting at least partly of metal | Alfred Scheithauer, Wolfgang Alberth, Herbert Ziegler | 1991-12-10 | $18,194,000 |
| 5002627 | Spray etching apparatus with automatic individually controllable etching jets | Alfred Scheithauer, Wolfgang Alberth, Herbert Ziegler | 1991-03-26 | $18,949,000 |