Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4413869 | Heat resistant cabinet and method of manufacture | Friedrich Rothhaas, Hans Hock | 1983-11-08 |
| 4272137 | Fire resistant cabinet with protective void in gypsum filling | Friedrich Rothhaas | 1981-06-09 |
| 4257656 | Fire protection cabinet | Friedrich Rothhaas | 1981-03-24 |