6 Matching Results

Search Results

Advanced search parameters have been applied.
Primary view of Oil-Converting Apparatus.
Adams, Joseph H.
October 28, 1919
Primary view of Device for Unscrewing and Withdrawing Pipe.
Fletcher, Harold W.
July 29, 1919
Primary view of Device For Extracting Cores From Wells.
Dodds, Redus D.
January 8, 1918
Primary view of Sample-Taking Device.
Church, Walter Lee
April 15, 1919
Primary view of Drill Bit
Childs, William L.
February 14, 1922
Primary view of Combination Well-Packer and Setting-Tool.
Abercrombie, Jamie & Dunman, Nesbit M.
January 6, 1920
Back to Top of Screen