| All Patents in class 451/16 |
Patents 1 -
10
of 21
      |
| Picture | Number | Date | Patentee | Title |
| | 493,008 | Mar. 07, 1893 | C.B. Beardsley | Lathe Attachment |
 | 925,867 | Jun. 22, 1909 | W.L. Bryant | Multispindle metal-grinding machine |
| | 1,261,083 | Apr. 02, 1918 | J.S. Wilcox, Jr. | Wheel Feed for Grinding Machines |
 | 1,287,342 | Dec. 10, 1918 | G.H. Knight | Tool Feed Mechanism for Shapers |
 | 1,290,896 | Jan. 14, 1919 | W.L. Bryant | Machine for grinding metal |
| | 1,672,117 | Jun. 05, 1928 | S. Einstein | Centralized Control for Grinders |
 | 1,683,859 | Sep. 11, 1928 | F.P. Brown | Grinding machine |
| | 1,684,792 | Sep. 18, 1928 | S. Einstein | Grinding Machine Having Balanced Spindle |
 | 1,788,475 | Jan. 13, 1931 | C.E. Van Norman | Feed mechanism for grinding machines |
| | 1,846,956 | Feb. 23, 1932 | F. Haas, L.F. Nenninger, S. Einstein | Grinding Machinery |
