DB

Douglas W. Brown

CL Coal Industry (Patents) Limited: 1 patents #2 of 8Top 25%
📍 Sunnyvale, CA: #57 of 230 inventorsTop 25%
🗺 California: #2,144 of 10,592 inventorsTop 25%
Overall (1989): #119,930 of 140,708Top 90%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4874512 Filter press cloth hanger — 1989-10-17