Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9938767 | Object transfer system for a flight of steps | Thomas Kummer, Donald K. Crenshaw | 2018-04-10 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9938767 | Object transfer system for a flight of steps | Thomas Kummer, Donald K. Crenshaw | 2018-04-10 |