Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5135270 | Apparatus for connecting the ends of a pair of oval duct sections | Peter J. Arnoldt | 1992-08-04 |
| 5129690 | Apparatus for connecting the ends of a pair of oval duct sections | Manfred Meinig, Peter J. Arnoldt | 1992-07-14 |
| 5103549 | Method for connecting the ends of a pair of oval duct sections | Manfred Meinig, Peter J. Arnoldt | 1992-04-14 |