All Patents of Type: well digging or drilling tools |
Patents 1 -
5
of 5
|
Number | Date | Patentee | Title | Type |
631,177 | Aug. 15, 1899 | H.W. Rank | Jar for Well Drilling Tools | well digging or drilling tools |
2,367,292 | Jan. 16, 1945 | R.G. Le Tourneau | Boring Head | well digging or drilling tools |
2,610,529 | Sep. 16, 1952 | W.H. Atkinson | Boring Head | well digging or drilling tools |
2,707,616 | May 03, 1955 | R.J. Koch, R.P. Schad | Boring Head for Horizontal Drills in Water Collecting Devices | well digging or drilling tools |
2,863,640 | Dec. 09, 1958 | G.A. Petersen | Offset Boring Head for Auger | well digging or drilling tools |