DC

Donald J. Clarke

Chevron: 1 patents #71 of 266Top 30%
📍 Cold Spring, NY: #1 of 4 inventorsTop 25%
🗺 New York: #1,258 of 5,342 inventorsTop 25%
Overall (1989): #119,863 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4877834 Lubricating oil containing a Mannich base Christopher S. Liu, Larry D. Grina 1989-10-31