| Patents for John Sellers Bancroft |
Patents 1 -
15
of 15
      |
| Number | Title | Classification(s) |
| 224,762 | Injector for Feeding Boilers | 417/193 |
| 243,634 | Feed Gearing for Machine Tools | 192/114R, 409/169, 74/425, 74/665Q |
| 248,263 | Turning Lathe | 74/89.32, 74/89.38, 74/89.45, 82/117, 82/137, 82/148, 82/149 |
| 270,366 | Drill | 408/230 |
| 323,019 | Machinery for Transmitting Motion | 192/15 |
| 331,178 | Injector | 417/184, 417/19 |
| 374,908 | Planing Machine for Metals | 192/21, 192/96, 409/323, 451/393, 74/27, 74/412R |
| 417,659 | Means for Operating the Die Heads of Bolt Threading Machines | 279/71, 408/176, 470/75 |
| 460,497 | Tool Grinding Machine | 451/239, 451/369 |
| 508,268 | Machine for Sharpening Drills | 451/138, 451/375 |
| 520,748 | Method of Operating Electric Motors | 200/18, 200/50.32, 318/154, 318/55, 318/82 |
| 552,873 | Testing Machine | 73/796, 73/860 |
| 646,397 | Grinding-Machine | 33/628, 451/138, 451/237, 451/369, 451/460, 451/541, 74/569 |
| 734,799 | Tool Grinding Machine | 451/213, 451/365, 451/377, 451/406, 74/25, 74/40, 74/99R |
| 944,404 | Comparator | 116/330, 177/DIG.9, 33/804 |
