| All Patents in class 451 |
Patents 2146 -
2160
of 3754
      |
| Number | Date | Patentee | Title | Type |
| 1,891,657 | Dec. 20, 1932 | F.J. Theler | Grinding Machine | grinding machines |
| 1,891,661 | Dec. 20, 1932 | G.W. Binns | Grinding | grinding machines |
| 1,891,662 | Dec. 20, 1932 | F.S. Haas, C. Booth | Machine Tool | grinding machines |
| 1,891,663 | Dec. 20, 1932 | C. Booth | Grinding Machinery | grinding machines |
| 1,891,777 | Dec. 20, 1932 | A.G. Plimmer | Grinding Machine | grinding machines |
| 1,893,068 | Jan. 03, 1933 | L.F. Nenninger, H. Ernst | Control for Hydraulic Systems | hydraulic apparatus |
| 1,893,566 | Jan. 10, 1933 | P.A. Solem, D.J. McLaughlin | Hopper feed for endless bed machines | woodworking machine stockfeeding mechanisms |
| 1,894,010 | Jan. 10, 1933 | H.E. Tautz | Work-holding means for gauges | tablesaw accessories |
| 1,894,382 | Jan. 17, 1933 | L. Mawer | Cam and like grinding machine | |
| 1,895,122 | Jan. 24, 1933 | F.K. Benedict | Traveling wheel grinder | grinders |
| 1,896,481 | Feb. 07, 1933 | R.A. Cole | Centerless Grinding Machine | grinding machines |
| 1,897,035 | Feb. 14, 1933 | C.J. Anderson | Grinding machine | sharpening machines |
| 1,898,136 | Feb. 21, 1933 | R.H. Miller, A.L. Miller | Brake Adjusting Tool | brake adjusting tools |
| 1,900,112 | Mar. 07, 1933 | J.H. Hoern | Grinding machine | cylindrical grinders |
| 1,902,629 | Mar. 21, 1933 | W.F. Evans | Drum Truing Machine | |
