| All Patents in class 451/398 |
Patents 1 -
15
of 82
      |
| Number | Date | Patentee | Title | Type |
| 16,782 | Mar. 10, 1857 | E. Andrews | Machine for grinding saws | making sawblades |
| 36,942 | Nov. 18, 1862 | E.J. Chapin | Watchmakers Lathe | watchmakers lathes |
| 137,837 | Apr. 15, 1873 | H. Grubenbecher | Improvement in carving-machines | carving machines |
| 166,705 | Aug. 17, 1875 | W. Krutzsch | Improvement in gear-cutting attachments | milling machine accessories |
| 185,159 | Dec. 12, 1876 | W. Bartlett, L. Bartlett | Expanding Mandrels for Turning Piston Rings | mandrels and arbors |
| 255,208 | Mar. 21, 1882 | J.H. Taylor | Grinding Machine | grinding machines |
| 308,639 | Dec. 02, 1884 | H.L. Stevens | Lathe Mandrel | mandrels and arbors |
| 379,307 | Mar. 13, 1888 | R.B. Codling | Lathe | wood lathes |
| 463,626 | Nov. 24, 1891 | W.W. Hastings | Automatic Screw Machine | screw machines |
| 489,398 | Jan. 03, 1893 | H.R. Towne | Rotating automatic machine-tool | rotary tables |
| 494,737 | Apr. 04, 1893 | C.O. Dost | Device for Spheric Turning | metal ball making machines |
| 564,479 | Jul. 21, 1896 | W.R. Fox | Drilling machine | drilling and boring |
| 573,846 | Dec. 29, 1896 | C.D. Ames | Butter-tub sanding machine | sanding machines |
| 614,190 | Nov. 15, 1898 | O.S. Walker | Magnetic chuck | magnetic chucks |
| 614,378 | Nov. 15, 1898 | W.R. Fox | Automatic rim-drilling machine | drilling and boring |
