| All Patents in class 408/9 |
Patents 1 -
15
of 19
      |
| Number | Date | Patentee | Title | Type |
| 966,217 | Aug. 02, 1910 | F.W. King | Electric drill | drill presses |
| 1,222,954 | Apr. 17, 1917 | J.F. Judd, J.J. Hogan | Threading mechanism for automatic lathes | metal lathes |
| 1,550,609 | Aug. 18, 1925 | W.R. Fox, H.D. Corwin | Metal-working machine | multiple spindle drilling heads |
| 1,607,614 | Nov. 23, 1926 | J.H. Graham | Tapping machine | tapping machines |
| 1,679,529 | Aug. 07, 1928 | A.M. Johnson | Automatic machine tool | tapping machines |
| 2,000,553 | May 07, 1935 | C.R. Alden | Machine tool | horizontal boring mills |
| 2,089,228 | Aug. 10, 1937 | J.H. McKewen, L.L. Schauer | Combination drilling and tapping control | tapping machines |
| 2,161,548 | Jun. 06, 1939 | C.E. Miller | Threading Mechanism | automatic lathes |
| 2,189,422 | Feb. 06, 1940 | G.W. Irwin | Combined drilling and tapping machine | drill presses |
| 2,253,413 | Aug. 19, 1941 | H.R. Young | Spindle Drive Control for Machine Tools | machine tool controls |
| 2,268,944 | Jan. 06, 1942 | G.W. Jones | Threading Mechanism | automatic lathes |
| 2,375,662 | May 08, 1945 | F. Mummert, H. Keeling | Automatic Tapping Attachment | tapping heads and chucks |
| 3,021,539 | Feb. 20, 1962 | H.R. Uhtenwoldt | Tapping Spindle Reversing Means Selectively Actuated Automatically or Manually by Quill Actuating Member | tapping heads and chucks |
| 3,461,472 | Aug. 19, 1969 | H.J. Baechle, W.K. Behrendt, R.K. Sedgwick | Machine tool with automatic tapping control | milling machines |
| 3,723,016 | Mar. 27, 1973 | R.A. Lehmkuhl | Spindle Depth Control | machine tool controls |
