| All Patents in class 408/9 |
Patents 1 -
15
of 20
      |
| Number | Title | Classification(s) |
| 966,217 | Electric drill | 144/104, 144/92, 408/9, 408/90 |
| 1,222,954 | Threading mechanism for automatic lathes | 29/37R, 408/10, 408/135, 408/9, 470/181, 470/83, 470/903 |
| 1,550,609 | Metal-working machine | 408/42, 408/9, 470/99 |
| 1,607,614 | Tapping machine | 408/36, 408/87, 408/9, 470/178, 470/181, 470/99, 74/322 |
| 1,679,529 | Automatic machine tool | 408/135, 408/71, 408/9, 470/105, 470/179, 470/98, 74/822 |
| 2,000,553 | Machine tool | 29/42, 29/64, 29/DIG.101, 408/11, 408/14, 408/39, 408/63, 408/9, 451/24, 74/27, 82/133, 86/49, 91/240, 91/264 |
| 2,089,228 | Combination drilling and tapping control | 408/9, 470/181, 470/96 |
| 2,161,548 | Threading Mechanism | 408/124, 408/9, 470/181, 470/66 |
| 2,189,422 | Combined drilling and tapping machine | 408/9, 470/181 |
| 2,253,413 | Spindle Drive Control for Machine Tools | 29/26R, 408/42, 408/9 |
| 2,268,944 | Threading Mechanism | 29/37R, 408/129, 408/9, 470/181, 475/2 |
| 2,375,662 | Automatic Tapping Attachment | 318/446, 408/133, 408/9, 470/103, 470/181 |
| 2,887,695 | Rotary Tool Spindle Reversing Means | 408/128, 408/35, 408/710, 408/9, 470/181 |
| 3,021,539 | Tapping Spindle Reversing Means Selectively Actuated Automatically or Manually by Quill Actuating Member | 408/135, 408/9 |
| 3,461,472 | Machine tool with automatic tapping control | 408/9, 470/167 |
