Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10314750 | Sliding arm mechanism for wheelchairs | Richard P. Derks, Corbett Brown, Jr. | 2019-06-11 |
| D834459 | Rollator | Zhiliang Wang, Margaret M. Andersen | 2018-11-27 |
| D834460 | Rollator | Zhiliang Wang, Margaret M. Andersen | 2018-11-27 |
| 9937089 | Sliding arm mechanism for wheelchairs | Richard P. Derks, Corbett Brown, Jr. | 2018-04-10 |
| D801231 | Rollator | Zhiliang Wang, Margaret M. Andersen | 2017-10-31 |
| D795753 | Rollator | Zhiliang Wang, Margaret M. Andersen | 2017-08-29 |
| D795752 | Rollator | Zhiliang Wang, Margaret M. Andersen | 2017-08-29 |
| D754568 | Rollator | Zhiliang Wang, Margaret M. Andersen | 2016-04-26 |
| D754034 | Rollator | Zhiliang Wang, Margaret M. Andersen | 2016-04-19 |
| D739314 | Rollator | Zhiliang Wang, Margaret M. Andersen | 2015-09-22 |
| D736121 | Rollator | Zhiliang Wang, Margaret M. Andersen | 2015-08-11 |
| 8991849 | Sliding arm mechanism for wheelchairs | Richard P. Derks, Corbett Brown, Jr. | 2015-03-31 |
| D720664 | Folding walker hinge | Ben Wang, Margaret M. Andersen | 2015-01-06 |