Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE42057 | Weather station | Rolf Haupt | 2011-01-25 |
| 6798720 | Projection alarm clock | Rolf Haupt | 2004-09-28 |
| 6761065 | Weather station | Rolf Haupt | 2004-07-13 |
| 5671192 | Radio-controlled clockwork | — | 1997-09-23 |