| All Patents in class 451 |
Patents 2131 -
2145
of 3754
      |
| Number | Date | Patentee | Title | Type |
| 1,874,331 | Aug. 30, 1932 | L.T. Medholdt | Knife grinder support for woodworking machines | wood planers |
| 1,874,583 | Aug. 30, 1932 | L.F. Nenninger | Grinding Machinery | grinding machines |
| 1,877,348 | Sep. 13, 1932 | N.F. McNaught, E.H. Peterson | Valve grinder | |
| 1,877,500 | Sep. 13, 1932 | H.R. Isler, S. Einstein | Hydraulic Grinder | grinding machines |
| 1,877,505 | Sep. 13, 1932 | B.A. Kearns, F.S. Haas | Grinding Machine | grinding machines |
| 1,877,515 | Sep. 13, 1932 | C.G. Liljeberg | Grinding Machine | grinding machines |
| 1,877,881 | Sep. 20, 1932 | A.M. Johnson | Honing machine | honing machines |
| 1,878,603 | Sep. 20, 1932 | A.E. Robinson | Lapping Machine | gear lapping machines |
| 1,880,347 | Oct. 04, 1932 | K.L. Herrmann | Method of Grinding Bearing Races | grinders |
| 1,881,984 | Oct. 11, 1932 | C.E. Van Norman | Slide Mechanism for Precision Grinding Machines | grinding machines |
| 1,885,123 | Nov. 01, 1932 | C.L. Mattison | Sanding drum | sanding machines |
| 1,887,623 | Nov. 15, 1932 | C.H. Driver | Surfacing roll | drum sanders |
| 1,888,679 | Nov. 22, 1932 | W. Knapp | Safety device for cutting machines | radial arm saws |
| 1,889,248 | Nov. 29, 1932 | A.J. Kilmer | Adjustible Tool Support | grinding fixtures |
| 1,891,185 | Dec. 13, 1932 | R.H. Miller, A.L. Miller | Gauge Device | special purpose gauges |
