| All Patents in class 451/394 |
Patents 1 -
10
of 34
      |
| Picture | Number | Date | Patentee | Title |
 | 65,942 | Jun. 18, 1867 | T. Prosser | Grinding and Polishing Machine |
 | 425,230 | Apr. 08, 1890 | A.B. Landis | Grinding-machine |
| | 434,115 | Aug. 12, 1890 | C.H. Norton | Grinding Machine |
| | 453,022 | May 26, 1891 | C.H. Norton | Grinding Machine |
| | 812,898 | Feb. 20, 1906 | J.J. Thacher | Feed Mechanism |
 | 1,018,395 | Feb. 20, 1912 | A.B. Landis | Grinding-machine |
| | 1,231,920 | Jul. 03, 1917 | T. Lumsden | Tool Holder for Grinding Machines |
| | 1,267,534 | May 28, 1918 | W.F. Fraser | Grinder |
| | 1,271,208 | Jul. 02, 1918 | J.S. Wilcox, Jr., C.H. Norton | Work Drive for Grinding Machines |
| | 1,430,625 | Oct. 03, 1922 | G.A. Carlson | Work-holding device |
