| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Bickford Drill & Tool Co. | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
 | 489,317 | Jan. 03, 1893 | A. Mill | Tapping attachment for drills | |
 | 543,395 | Jul. 23, 1895 | A. Mill | Drilling-machine | |
| 792,842 | Jun. 20, 1905 | H.M. Norris | Drill | ||
| 883,118 | Mar. 24, 1908 | H.M. Norris | Arm for Radial Drills | ||