| All Patents in class 409/234 |
Patents 1 -
10
of 18
      |
| Picture | Number | Date | Patentee | Title |
 | 450,398 | Apr. 14, 1891 | E.A. Corliss, administratrix, G.H. Corliss, deceased (estate of) | Machine for Finishing the Ends of Cylinders of Steam Engines |
 | 1,191,813 | Jul. 18, 1916 | J.O. Dixon, E.S. Mummert | Facing-tool |
| | 1,231,946 | Jul. 03, 1917 | W.L. Schellenbach | Tool-holder stop mechanism |
 | 1,337,313 | Apr. 20, 1920 | W.F. Groene | Device for connecting tools to spindles |
| | 1,439,190 | Dec. 19, 1922 | H.P. Pritchard | Boring or Surfacing Tool Holder |
| | 1,475,278 | Nov. 27, 1923 | L.C. Cole | Pneumatic Tool Holder |
| | 1,893,509 | Jan. 10, 1933 | E.B. Stimpson | Slotting machine |
 | 2,050,347 | Aug. 11, 1936 | E.R. Lochman | General utility machine tool |
| | 3,041,898 | Jul. 03, 1962 | B.R. Better | Tool Centering Device |
| | 3,339,458 | Sep. 05, 1967 | T.V. Williams | Rotary-Cutter Tools |
