JL

James Liu

📍 Oceanside, CA: #9 of 31 inventorsTop 30%
🗺 California: #2,144 of 10,592 inventorsTop 25%
Overall (1989): #100,045 of 140,708Top 75%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4817238 Pneumatic door-closer having a closable passage and a regulatable passage — 1989-04-04