Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874335 | Cable assembly for mineral mining installations | Reiner Frank | 1989-10-17 |
| 4870364 | Method of, and apparatus for, monitoring the operation of electromagnetic hydraulic valves | Uwe Trox, Martin Reuter, Johannes Konig | 1989-09-26 |