DH

David Holdman

AT Aps Technology: 1 patents #27 of 56Top 50%
Overall (All Time): #2,847,383 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
10233700 Downhole drilling motor with an adjustment assembly Bill Murray, Mark Ellsworth Wassell 2019-03-19