| All Patents in class 408/133 |
Patents 16 -
30
of 74
      |
| Number | Date | Patentee | Title | Type |
| 687,407 | Nov. 26, 1901 | W. Runge | Drilling and tapping attachment for drill-presses | metalworking machines |
| 688,508 | Dec. 10, 1901 | A.H. Gang | Drilling machinery | radial drill presses |
| 766,883 | Aug. 09, 1904 | E.A. Hoefer, A.G. Hoefer, F.W. Hoefer | Drilling Machine | drill presses |
| 779,931 | Jan. 10, 1905 | A.T. Allcock, W. Harker | Boring Machine | horizontal boring mills |
| 831,697 | Sep. 25, 1906 | B.F. Barnes | Drilling-machine | drill presses |
| 831,698 | Sep. 25, 1906 | B.F. Barnes | Drilling-machine | drill presses |
| 873,441 | Dec. 10, 1907 | W.A. Leonard | Reversing tap-holder | tapping heads and chucks |
| 943,414 | Dec. 14, 1909 | M.N. Jarvis | Reversing Chuck and Tool Holder | tapping heads and chucks |
| 1,084,118 | Jan. 13, 1914 | W.W. Vosper | Pipe Threading and Cutting Apparatus. | pipe threading machines |
| 1,121,714 | Dec. 22, 1914 | C.M. Conradson | Multiple Use Machine | drilling and boring |
| 1,231,721 | Jul. 03, 1917 | H. Dreses | Feeding mechanism in metal-working machinery | radial drill presses |
| 1,250,362 | Dec. 18, 1917 | W.L. Schellenbach | Metal-boring machine | vertical boring mills |
| 1,489,523 | Apr. 08, 1924 | W.R. Fox, H.D. Corwin | Drilling machine (multiple drill) | |
| 1,635,703 | Jul. 12, 1927 | E.P. Bullard, Jr. | Multiple-Spindle Drilling Machine | |
| 1,638,654 | Aug. 09, 1927 | J.C. Carlton | Radial Drill | radial drill presses |
