| All Patents in class 74/323 |
Patents 1 -
7
of 7
      |
| Number | Title | Classification(s) |
| 446,148 | Grinding-machine | 29/DIG.101, 451/143, 451/451, 451/454, 74/323 |
| 718,514 | Feed-tripping mechanism | 409/151, 74/323 |
| 930,620 | Combined breast-drill and valve-grinder | 451/117, 74/112, 74/318, 74/320, 74/323, 74/423, 81/34 |
| 933,945 | Gearing for Traction Engines | 74/323, 74/378 |
| 963,986 | Combination drill and valve-grinder | 451/117, 74/318, 74/320, 74/323 |
| 977,258 | Combined valve grinder and drill | 451/117, 74/318, 74/323, 81/34 |
| 1,693,437 | Valve grinder | 74/323 |
