JA

John Ackland

WL Warman International Limited: 2 patents #7 of 21Top 35%
Overall (All Time): #2,359,217 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4465144 Drill rig mast structure Hans Gugger 1984-08-14
4393944 Drill rig Hans Gugger 1983-07-19