Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10828226 | Collapsible upright wheeled walker apparatus | Peter James Fellingham, Yichuan Pan, David A. Purcell | 2020-11-10 |
| 10588815 | Collapsible upright wheeled walker apparatus | Peter James Fellingham, Yichuan Pan, David A. Purcell | 2020-03-17 |
| 10322056 | Collapsible upright wheeled walker apparatus | Peter James Fellingham, Yichuan Pan, David A. Purcell | 2019-06-18 |
| 10085909 | Collapsible upright wheeled walker apparatus | Peter James Fellingham, Yichuan Pan, David A. Purcell | 2018-10-02 |
| 9585807 | Collapsible upright wheeled walker apparatus | Peter James Fellingham, Yichuan Pan, David A. Purcell | 2017-03-07 |