Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673258 | Method and apparatus for the enlargement of the reach of the transmission channel between functional groups of an | Klaus Helbig, Norbert Wulst | 1997-09-30 |
| 4661170 | Method and composition for preserving aluminum surfaces | Rainer Osberghaus, Dieter Brodalla, Harald Bossek | 1987-04-28 |