Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4928955 | Toy having sliding rail | — | 1990-05-29 |
| 4839780 | Simulative candle | Der C. Cheng | 1989-06-13 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4928955 | Toy having sliding rail | — | 1990-05-29 |
| 4839780 | Simulative candle | Der C. Cheng | 1989-06-13 |