Yu Zheng

Beijing, PA: #1 of 2 inventorsTop 50%

Overall (1997): #9,172 of 185,788Top 5%

3 Patents 1997

Issued Patents 1997

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
D387397	Constructional toy piece	—	1997-12-09
D383805	Constructional toy piece	—	1997-09-16
D381051	Constructional toy piece	—	1997-07-15