YT

Yung-Chi Tsao

Overall (All Time): #1,657,336 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5199411 Toy missile projector — 1993-04-06
5169253 Writing instrument with a projector mechanism — 1992-12-08
4848307 Toy air pistol for launching missile bullet — 1989-07-18