Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4944656 | Telescopic rod means having rotatably retractable display sheet | Ou-Yang Feng | 1990-07-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4944656 | Telescopic rod means having rotatably retractable display sheet | Ou-Yang Feng | 1990-07-31 |