Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4875568 | Escalator handrail drive | Ralf Holzhauer | 1989-10-24 | $4,972,000 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4875568 | Escalator handrail drive | Ralf Holzhauer | 1989-10-24 | $4,972,000 |