Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798964 | Method and apparatus for the contactless measuring of the tread quality of railroad | Harald Schmalfuss, Friedel Sinsel | 1989-01-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798964 | Method and apparatus for the contactless measuring of the tread quality of railroad | Harald Schmalfuss, Friedel Sinsel | 1989-01-17 |