Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887991 | Drive assemblies for chain-driven mining machinery | Heinrich Cwielong, Gerhard Merten | 1989-12-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4887991 | Drive assemblies for chain-driven mining machinery | Heinrich Cwielong, Gerhard Merten | 1989-12-19 |