WC

Wen-Kuei Chao

Overall (All Time): #1,655,377 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5340224 Push-type writing instrument — 1994-08-23
4934057 Multi-blade pencil-core sharpener — 1990-06-19
4251163 Knock-out type automatic pencil — 1981-02-17