| All Patents in class 470/66 |
Patents 31 -
45
of 56
      |
| Number | Date | Patentee | Title | Type |
| 1,130,398 | Mar. 02, 1915 | G.O. Gridley | Screw-threading mechanism | screw machines |
| 1,154,010 | Sep. 21, 1915 | C. Grunbauch | Tool Holder | lathe tool holders and tool posts |
| 1,254,933 | Jan. 29, 1918 | E. Peuch, A. Abbey | Drilling, Screw Cutting , and Other Similar Machine | drill press chucks |
| 1,376,791 | May 03, 1921 | F.W. Franklin, W.W. Baker | Self Centering Tool Holder | metalworking machine tool holders |
| 1,506,331 | Aug. 26, 1924 | I. Benkö | Tool Holder | drilling and boring tool holders |
| 1,560,487 | Nov. 03, 1925 | A.A. Shafer | Automatic Screw Threading Machine | metal threading machines |
| 1,635,447 | Jul. 12, 1927 | W.W. Vosper | Cutting-Tool Mounting and Controller | pipe threading machines |
| 1,638,030 | Aug. 09, 1927 | L.S. Hall | Pipe Threading Machine | pipe threading machines |
| 1,679,530 | Aug. 07, 1928 | A.M. Johnson | Automatic drilling or tapping machine | drill presses |
| 1,721,378 | Jul. 16, 1929 | G.J. Draeger | Floating Tool Holder | drilling and boring tool holders |
| 1,749,861 | Mar. 11, 1930 | W.W. Vosper | Pipe Cutter | pipe cutting machines |
| 1,758,973 | May 20, 1930 | C. Rasmussen | Pipe-threading machine | pipe threading machines |
| 1,787,932 | Jan. 06, 1931 | A.F. Breitenstein | Floating Tool Holder | tap and die holders |
| 1,848,044 | Mar. 01, 1932 | L.H. Blood | Broaching Machine | broaching machines |
| 1,943,643 | Jan. 16, 1934 | W.W. Vosper | Power Tool | pipe threading machines |
