YJ

Yen-Ming Jeng

Overall (1994): #7,330 of 165,921Top 5%
3
Patents 1994

Issued Patents 1994

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
D352802 Rider's safety helmet — 1994-11-22
D351684 Rider's safety helmet — 1994-10-18
5337421 Air ventilation helmet — 1994-08-16