Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D392661 | Eyewear | Ferdinand A. Porsche | 1998-03-24 |
| 4522061 | Portable measuring device | Karl Hochreuther | 1985-06-11 |
| 4476721 | Multi-purpose measuring device with a hinged display | Karl Hochreuther | 1984-10-16 |