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David Brenkley

CL Coal Industry (Patents) Limited: 1 patents #73 of 230Top 35%
📍 Derby, GB: #489 of 964 inventorsTop 55%
Overall (All Time): #4,035,981 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4453846 Mine equipment Rex Mullins 1984-06-12