| All Patents in class 408/235 |
Patents 1 -
15
of 63
      |
| Number | Date | Patentee | Title | Type |
| 46,123 | Jan. 31, 1865 | W. Lyon | Improvement in drilling-machines | drilling and boring |
| 141,279 | Jul. 29, 1873 | C. Krapf | Improvement in lathes for turning tobacco-pipes | wood lathes |
| 148,716 | Mar. 17, 1874 | W. Kuck | Improvement in Metal-Drilling Machines | drilling and boring |
| 168,862 | Oct. 19, 1875 | M.G. Wilder, W.H. McNeil, H.C. Tyler | Improvement in boring-machines | drilling and boring |
| 264,263 | Sep. 12, 1882 | F. Dubrul | Metal-drilling machine | drill presses |
| 297,383 | Apr. 22, 1884 | H. Hobbs, E.F. Gordon | Suspended drilling-machine | radial drill presses |
| 332,242 | Dec. 15, 1885 | W. Evans | Drill-press | drill presses |
| 367,782 | Aug. 09, 1887 | F.H. Brown | Convertable Machine for Slotting or Drilling | drill presses |
| 389,613 | Sep. 18, 1888 | W. Thiem | Mechanism for operating drills | wood drilling and boring |
| 395,592 | Jan. 01, 1889 | M. Schwarzler | Feed attachment for drilling-machines | drilling and boring |
| 460,692 | Oct. 06, 1891 | F.H. Richards | Drilling-machine | drill presses |
| 629,042 | Jul. 18, 1899 | G.W. Moreton | Boring and Turning Mill | vertical boring mills |
| 694,783 | Mar. 04, 1902 | A.D. Quint | Turret drilling, milling and tapping machine | drill presses |
| 713,903 | Nov. 18, 1902 | H.E. Morton, M. Morton | Counterbalance for Traveling Head Shapers, &c. | metal shapers |
| 815,696 | Mar. 20, 1906 | W.J. Hagman | Counterbalance Device | metal planer accessories |
