Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6722420 | Internally finned heat transfer tube with staggered fins of varying height | Christoph Walther | 2004-04-20 |
| 6631758 | Internally finned heat transfer tube with staggered fins of varying height | Christoph Walther | 2003-10-14 |