Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10227211 | Combined stairway and lift installation and method for converting said stairway into said lift | Steven Lyons | 2019-03-12 |
| 6050366 | Combined stairway and lift installation and a retractable stairway | — | 2000-04-18 |