| All Patents in class 451 |
Patents 2146 -
2160
of 3614
      |
| Number | Date | Patentee | Title | Type |
| 1,924,593 | Aug. 29, 1933 | G.W. Binns | Grinding Machine | grinding machines |
| 1,924,608 | Aug. 29, 1933 | H.R. Isler | Cutter Grinder | tool grinders |
| 1,925,709 | Sep. 05, 1933 | H.W. Zimmerman | Cylinder grinding tool | automotive tools |
| 1,925,808 | Sep. 05, 1933 | W.A. Kelsey | Dental Tool Holder | dental tools |
| 1,926,603 | Sep. 12, 1933 | B.F. Stowell | Automatic feed for grinding machines | grinders |
| 1,927,007 | Sep. 12, 1933 | J.R. Whittles | Grinding machine | |
| 1,928,162 | Sep. 26, 1933 | H.H. Asbridge | Precision grinding or abrading machine | grinding machines |
| 1,928,353 | Sep. 26, 1933 | L.D. Goodspeed | Automatic variety lathe | wood lathes |
| 1,928,390 | Sep. 26, 1933 | H.L. Myers | Planetary type surfacing machine | sanding machines |
| 1,928,637 | Oct. 03, 1933 | R.A. Williams | Brake for woodworking machines | sanding machines |
| 1,932,319 | Oct. 24, 1933 | H.L. Myers | Surface grinding machine | |
| 1,932,952 | Oct. 31, 1933 | G.W. Binns | Grinding Machine | grinding machines |
| 1,932,969 | Oct. 31, 1933 | C.W. Hopkins, J.E. Caster | Grinding Machine | grinding machines |
| 1,932,993 | Oct. 31, 1933 | H.K. Tegarden | Grinding Machine | grinding machines |
| 1,934,814 | Nov. 14, 1933 | H.L. Myers | Light weight surfacing machine | |
