| All Patents in class 451/435 |
Patents 16 -
30
of 37
      |
| Number | Date | Patentee | Title | Type |
| 549,250 | Nov. 05, 1895 | T.P. Owen | Tool Holder for Jewelers Lathes | lathe tool holders and tool posts |
| 603,400 | May 03, 1898 | A.J. Farmer | Lathe Attachment | metal lathe accessories and attachments |
| 710,808 | Oct. 07, 1902 | R.M. Russell | Grinding attachment for lathes | metal lathe accessories and attachments |
| 744,340 | Nov. 17, 1903 | J.N. Heald | Grinding Attachment for Lathes | metal lathe accessories and attachments |
| 884,966 | Apr. 14, 1908 | M.H. Westbrook | Crank Pin Turning Machine | portable turning tools |
| 921,858 | May 18, 1909 | W.C. MacBain | Tool-Rest for Lathes | metal lathes |
| 968,884 | Aug. 30, 1910 | V.E. Middlekauff, W.H. Reisner | Indicating Surface Gage | dial indicator gauges |
| 985,041 | Feb. 21, 1911 | W. Lodge | Diameter Gage for Lathes | metal lathe accessories and attachments |
| 1,133,064 | Mar. 23, 1915 | W.L. Schellenbach | Work-securing mechanism | metal lathes |
| 1,259,131 | Mar. 12, 1918 | E. Ritz, Jr. | Grinder | |
| 1,263,671 | Apr. 23, 1918 | W.H. Hollopeter | Milling and Grinding Attachments for Machine Lathes | metal lathe accessories and attachments |
| 1,443,453 | Jan. 30, 1923 | C.H. Beach | Universal Multiple Speed Grinder | grinders |
| 1,445,875 | Feb. 20, 1923 | R.W. Ellingham, C.E. Van Norman | Grinding machine | vehicle mechanic |
| 1,756,949 | May 06, 1930 | E.S. McGonegal | Portable Grinding Tool | metal lathe accessories and attachments |
| 1,859,068 | May 17, 1932 | C.H. Beach | Electric Grinder | |
