| All Patents in class 409/226 |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 172,130 | Jan. 11, 1876 | J.C. Klein | Improvement in machines for dressing the eyes of picks | tool making machines |
| 464,577 | Dec. 08, 1891 | L. Mayer | Bush-hammer sharpener | grinders |
| 489,398 | Jan. 03, 1893 | H.R. Towne | Rotating automatic machine-tool | rotary tables |
| 555,116 | Feb. 25, 1896 | G.C. Bardons, J.G. Oliver | Automatic Valve Milling Machine | milling machines |
| 598,257 | Feb. 01, 1898 | V. Royle | Beveling-machine | printer |
| 816,198 | Mar. 27, 1906 | F. Wesel | Metal Cutting Machine | metal shearing machines |
| 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 | metalworking power transmission |
| 1,261,432 | Apr. 02, 1918 | S.E. Parslow | Milling Machine | milling machines |
| 1,279,286 | Sep. 17, 1918 | F.M. Davis | Duplex Milling Machine | milling machines |
| 1,666,500 | Apr. 17, 1928 | N.I. Lundberg | Metal Working Tool | grinders |
| 1,976,104 | Oct. 09, 1934 | W.D. Archea | Milling Machinery | milling machines |
| 2,002,938 | May 28, 1935 | L.A. Dumser, O.W. Floody | Machine tool | |
| 2,364,884 | Dec. 12, 1944 | W.H. Weimer | Work clamping means for machine tools | milling machines |
| 2,397,086 | Mar. 26, 1946 | S.G. Brady | Method and Apparatus for Cutting Keyways | milling machine accessories |
