Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647138 | Cap sharpener for clutch-type pencil | Hung Ming Tang | 1997-07-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647138 | Cap sharpener for clutch-type pencil | Hung Ming Tang | 1997-07-15 |