| All Patents in class 451/395 |
Patents 1 -
10
of 46
      |
| Picture | Number | Date | Patentee | Title |
| | 797,216 | Aug. 15, 1905 | J.J. Thacher, E.H. Parks | Grinding-Machine |
| | 818,518 | Apr. 24, 1906 | D.T. Clemons | Double-belt sander |
| | 876,428 | Jan. 14, 1908 | J.G. Blessing | Fluid Pressure Operated Grinding Machine |
| | 1,276,167 | Aug. 20, 1918 | S.K. Brown | Surface Finishing Machine |
| | 1,280,284 | Oct. 01, 1918 | W.E. Nickerson | Blade Holding Mechanism for Blade Sharpening Machines |
| | 1,534,301 | Apr. 21, 1925 | P. Conradson | Grinding Machine |
| | 1,534,302 | Apr. 21, 1925 | K.F. Gallimore, H.E. Kempton, P. Conradson | Grinding Machine |
 | 1,575,968 | Mar. 09, 1926 | W.L. Bryant | Grinding machine |
| | 1,718,554 | Jun. 25, 1929 | J. Greensmith | Hydraulic Grinder |
| | 1,832,694 | Nov. 17, 1931 | L.F. Nenninger, H. Ernst | Auxiliary Manual Means for Actuating Hydraulic Motors |
