RH

Robert Holdsworth

JM Joy Global Underground Mining: 1 patents #59 of 130Top 50%
Overall (All Time): #2,741,374 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11078790 Electric drilling and bolting device Brad Neilson, Peter Hanna 2021-08-03