Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4686011 | Method for the protection of and/or monitoring of changes in a reference system in analytical measuring engineering, and reference system with a reference electrode | — | 1987-08-11 |
| 4389879 | Method and apparatus for determining the colloid index in liquids | Dieter Bach, Kurt Marquardt | 1983-06-28 |