| All Patents in class 408/237 |
Patents 1 -
15
of 92
      |
| Number | Date | Patentee | Title | Type |
| 68,827 | Sep. 10, 1867 | A. Whipple, E.S. Young | Metal Drill | portable metal drilling machines |
| 184,060 | Nov. 07, 1876 | A. Box | Radial Drill | radial drill presses |
| 441,509 | Nov. 25, 1890 | F. Schoff | Drill-support | portable metal drilling machines |
| 453,780 | Jun. 09, 1891 | W.H. Warren | Radial Drilling Machine | radial drill presses |
| 462,309 | Nov. 03, 1891 | W.E. Gang | Drill Press | drill presses |
| 511,736 | Dec. 26, 1893 | C.L. Libby | Taper Attachment and Feed Mechanism for Vertical Boring Mill | vertical boring mills |
| 513,128 | Jan. 23, 1894 | A.J. Mill | Radial drill | radial drill presses |
| 515,237 | Feb. 20, 1894 | J.P. Lavigne | Drilling Machine | drill presses |
| 515,988 | Mar. 06, 1894 | C.H. Baush | Drilling-machine | radial drill presses |
| 515,989 | Mar. 06, 1894 | C.H. Baush | Drilling-machine | radial drill presses |
| 560,171 | May 12, 1896 | A.J. Oehring | Multiple drill | multiple spindle drill presses |
| 612,946 | Oct. 25, 1898 | W.E. Hotchkiss | Support for drilling-machines | drill presses |
| 661,586 | Nov. 13, 1900 | V.F. Prentice | Radial drilling-machine | radial drill presses |
| 676,197 | Jun. 11, 1901 | A. Mill | Radial drill | radial drill presses |
| 676,389 | Jun. 11, 1901 | A. Mill | Radial Drill | radial drill presses |
