Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885383 | Process for the preparation of carboxylic acid methyl esters | Helmut Springer, Peter Lappe | 1989-12-05 |
| 4854707 | Method and apparatus for the optical electronic measurement of a workpiece | Manfred Ring, Helmut Ackermann | 1989-08-08 |