Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875558 | Safety brake for escalators | Dietmar Berkhan | 1989-10-24 |
| 4836353 | Guide for moving handrail | Willy Adrian | 1989-06-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875558 | Safety brake for escalators | Dietmar Berkhan | 1989-10-24 |
| 4836353 | Guide for moving handrail | Willy Adrian | 1989-06-06 |