Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306882 | Measuring elevator hoistway position using audible signals | Axel Steffen Gerwing, Claudia M. Schmidt-Milkau | 1994-04-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306882 | Measuring elevator hoistway position using audible signals | Axel Steffen Gerwing, Claudia M. Schmidt-Milkau | 1994-04-26 |