Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648645 | Elevator excess speed detector with multiple light barrier | Christian Arpagaus, Daniel Zach | 1997-07-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5648645 | Elevator excess speed detector with multiple light barrier | Christian Arpagaus, Daniel Zach | 1997-07-15 |