Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6665988 | Elevator landing door structure | Helge Korhonen | 2003-12-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6665988 | Elevator landing door structure | Helge Korhonen | 2003-12-23 |