| All Patents in class 409/242 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 110,951 | Jan. 17, 1871 | A.H. Brainard | Improvement in Back Centers for Milling Machines | milling machine accessories |
| 362,082 | May 03, 1887 | G.A. Mueller, F. Holz | Milling Machine | milling machines |
| 470,245 | Mar. 08, 1892 | T.L. Smith, F. Kempsmith | Tail-stock for milling-machines | milling machines |
| 491,521 | Feb. 14, 1893 | J.W. Boynton | Tail Stock for Milling Machines | milling machine accessories |
| 610,677 | Sep. 13, 1898 | C.L. Grohmann | Tail-stock for milling-machines | milling machines |
| 3,418,757 | Dec. 31, 1968 | J. McEwan | Lawn mower sharpener | |
