Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668494 | Door frame at elevator shaft doors | Jules Christen, Peter Spiess | 2003-12-30 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668494 | Door frame at elevator shaft doors | Jules Christen, Peter Spiess | 2003-12-30 |