Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875360 | Method and device for checking filters | — | 1989-10-24 |
| 4710208 | Suspendable modular frame arrangement for clean room ceilings having a fluid seal | Fritz Neubert, Wilhelm Holle | 1987-12-01 |
| 4554766 | Ceiling construction for clean rooms | Wilhelm Holle | 1985-11-26 |