| All Patents in class 409/226 |
Patents 1 -
10
of 21
      |
| Picture | Number | Date | Patentee | Title |
 | 172,130 | Jan. 11, 1876 | J.C. Klein | Improvement in machines for dressing the eyes of picks |
 | 464,577 | Dec. 08, 1891 | L. Mayer | Bush-hammer sharpener |
 | 489,398 | Jan. 03, 1893 | H.R. Towne | Rotating automatic machine-tool |
 | 555,116 | Feb. 25, 1896 | G.C. Bardons, J.G. Oliver | Automatic Valve Milling Machine |
| | 598,257 | Feb. 01, 1898 | V. Royle | Beveling-machine |
| | 809,007 | Jan. 02, 1906 | H.W. Oster | Machine for cutting dies for die-stocks |
| | 816,198 | Mar. 27, 1906 | F. Wesel | Metal Cutting Machine |
| | 1,036,250 | Aug. 20, 1912 | J.E. Johnson | Nurling Machine |
| | 1,258,614 | Mar. 05, 1918 | S. Einstein, R.T. Hazelton | Automatic Machine Tool |
| | 1,261,432 | Apr. 02, 1918 | S.E. Parslow | Milling Machine |
