| All Patents in class 408/133 |
Patents 31 -
45
of 74
      |
| Number | Date | Patentee | Title | Type |
| 1,660,137 | Feb. 21, 1928 | A.M. Sosa, A.E. Robinson | Drilling Machine | radial drill presses |
| 1,660,477 | Feb. 28, 1928 | C.M. Conradson | Radial Drilling Machine | radial drill presses |
| 1,679,027 | Jul. 31, 1928 | C. Gabrielson, A. Meldrum | Drilling machine | drill presses |
| 1,682,844 | Sep. 04, 1928 | D.C. Klausmeyer | Box-column-type upright drill | drill presses |
| 1,696,403 | Dec. 25, 1928 | D.C. Klausmeyer | Accessible Twin Lever Gear Shift for Drill Heads | metalworking machine mechanisms |
| 1,715,321 | May 28, 1929 | W.C. De Roo | Radial drill machine | radial drill presses |
| 1,746,264 | Feb. 11, 1930 | D.C. Klausmeyer | Convertible Drilling and Tapping Machine | drill presses |
| 1,746,265 | Feb. 11, 1930 | D.C. Klausmeyer | Drilling Machine Having Interchangeable Hand and Power Feeds | metalworking machine mechanisms |
| 1,746,266 | Feb. 11, 1930 | D.C. Klausmeyer | Spindle Feeding Means | metalworking machine mechanisms |
| 1,760,430 | May 27, 1930 | J.F. Mirrielees | Drilling machine | drill presses |
| 1,796,352 | Mar. 17, 1931 | S.C. Watson | Automatic Tapping Head | tapping heads and chucks |
| 1,858,995 | May 17, 1932 | D.C. Klausmeyer | Detachable Spindle Drive and Feed Unit | metalworking machine mechanisms |
| 1,893,965 | Jan. 10, 1933 | C.F. Sherman | Drill press | drill presses |
| 1,936,383 | Nov. 21, 1933 | C.J. Davis | Metal working machinery | vertical boring mills |
| 1,947,862 | Feb. 20, 1934 | H.N. Stephan, H.M. Lucas | Special High Speed Drive for the Spindle of Boring Machine and Other Machine Tools | horizontal boring mills |
