Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863006 | Automatic shutoff apparatus for an escalator | Mark Dirk Blondiau, Gerhart Rulke | 1989-09-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863006 | Automatic shutoff apparatus for an escalator | Mark Dirk Blondiau, Gerhart Rulke | 1989-09-05 |