Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4969255 | Apparatus for producing heat exchanger tubes | Martin Schmidt, Karl Mayr | 1990-11-13 |
| 4841617 | Method for producing heat exchanger tubes | Martin Schmidt, Karl Mayr | 1989-06-27 |