| All Patents in class 74/841 |
Patents 61 -
71
of 71
      |
| Number | Date | Patentee | Title | Type |
| 1,168,143 | Jan. 11, 1916 | F.R. Gravatt, H.W. Alcorn | Tapping Machine | tapping machines |
| 1,169,657 | Jan. 25, 1916 | G.O. Leopold | Drill | drill presses |
| 1,200,628 | Oct. 10, 1916 | J.A. Leland | Bench-drill brace | drill presses |
| 1,244,449 | Oct. 23, 1917 | W.R. Carey | Boring and general-use machine | horizontal boring mills |
| 1,732,559 | Oct. 22, 1929 | A.M. Johnson | Machine-tool feed | nut or bolt making machines |
| 2,081,145 | May 25, 1937 | G.H. Schurger, K.F. Gallimore | Machine Tool | horizontal boring mills |
| 2,269,064 | Jan. 06, 1942 | R.H. Rideout | Power feed mechanism for machine tools | drill presses |
| 2,367,292 | Jan. 16, 1945 | R.G. Le Tourneau | Boring Head | well digging or drilling tools |
| 2,396,733 | Mar. 19, 1946 | H.V. Boehnke, C.A. Wiken | Drilling machine | drilling and boring |
| 2,423,223 | Jul. 01, 1947 | E.P. Bullard, F.H. Mussler | Machine Tool | |
| 3,058,129 | Oct. 16, 1962 | E.B. Sullivan | Combination Drilling and Self-Leading Tapping Machine Tool | |
