Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4556256 | Cutting appliances for use in tunnel driving operations | Hans G. Follert, Herbert Rzepka | 1985-12-03 |
| 4217197 | Apparatus for removing anode residue from anodes of electrolytic melt baths | Klaus-Burkhard Harder | 1980-08-12 |