Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8052162 | Vehicle step apparatus and extending and retracting device therefor | Lingling Yang | 2011-11-08 |
| 8042821 | Extending and retracting device and vehicle step apparatus with the same | Lingling Yang | 2011-10-25 |