Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5052539 | Circular escalator | Geoffrey S. Fillingsness, Raymond J. Cipra | 1991-10-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5052539 | Circular escalator | Geoffrey S. Fillingsness, Raymond J. Cipra | 1991-10-01 |