| All Patents in class 408/134 |
Patents 16 -
30
of 38
      |
| Number | Date | Patentee | Title | Type |
| 1,388,875 | Aug. 30, 1921 | J.F. Mirrielees | Feed mechanism for drilling-machines | drill presses |
| 1,424,538 | Aug. 01, 1922 | C.A. Widmer | Drill press | drill presses |
| 1,441,668 | Jan. 09, 1923 | J. Eckhard | Drill press | drill presses |
| 1,559,190 | Oct. 27, 1925 | C.F. Sherman | Drill press | drill presses |
| 1,635,703 | Jul. 12, 1927 | E.P. Bullard, Jr. | Multiple-Spindle Drilling Machine | |
| 1,672,128 | Jun. 05, 1928 | D.C. Klausmeyer | Upright Drill Depth Gauge | metalworking machine mechanisms |
| 1,679,531 | Aug. 07, 1928 | A.M. Johnson | Gang machine tool | multiple spindle drill presses |
| 1,688,547 | Oct. 23, 1928 | D.C. Klausmeyer | Automatic Positive Feed Clutch for Drilling Machines | metalworking machine mechanisms |
| 1,703,791 | Feb. 26, 1929 | W.G. Hoelscher, A.M. Sosa | Feeding Mechanism for Drilling Machinery | radial drill presses |
| 1,727,607 | Sep. 10, 1929 | D.C. Klausmeyer | Quick Acting Depth Gauge | drill presses |
| 1,735,401 | Nov. 12, 1929 | A.M. Johnson | Band-brake stop for drill feed shafts | drill presses |
| 1,752,422 | Apr. 01, 1930 | A.G. Decker | Portable electric tapper | handheld power tool accessories |
| 1,781,274 | Nov. 11, 1930 | W.C. De Roo | Feed-control mechanism | drill presses |
| 1,929,814 | Oct. 10, 1933 | W.M. Fairbairn, F.M. Hanna | Feed tripping mechanism for drilling machines | drill presses |
| 1,936,383 | Nov. 21, 1933 | C.J. Davis | Metal working machinery | vertical boring mills |
