Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813750 | Track chain constructed pursuant to the linkage principle for track-laying vehicles | Gunter Erlenmaier | 1989-03-21 |
| 4798501 | Flexible rock anchor | — | 1989-01-17 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813750 | Track chain constructed pursuant to the linkage principle for track-laying vehicles | Gunter Erlenmaier | 1989-03-21 |
| 4798501 | Flexible rock anchor | — | 1989-01-17 |