Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5522518 | Closure device for a cylindrical housing | Franz Konrad, Manfred Lederer | 1996-06-04 |
| 5294011 | Closure means for a cylindrical housing | Franz Konrad, Manfred Lederer | 1994-03-15 |
| 5275299 | Closure device for an in particular evacuable cylindrical housing | Franz Konrad, Manfred Lederer | 1994-01-04 |