DD

Duc Doan

📍 Campbell, CA: #14 of 66 inventorsTop 25%
🗺 California: #3,049 of 13,957 inventorsTop 25%
Overall (1994): #140,194 of 165,921Top 85%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5322033 Mechanism for indicating when to change engine oil — 1994-06-21