Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4976345 | Escalator handrail obstruction device with sensors | Willy Adrian | 1990-12-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4976345 | Escalator handrail obstruction device with sensors | Willy Adrian | 1990-12-11 |