| All Patents in class 29/51 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 409,786 | Aug. 27, 1889 | J. Hartness | Turret Lathe Having a Supplemental Drill Spindle | horizontal drilling machines |
| 447,017 | Feb. 24, 1891 | C.M. Spencer | Screw Machine | screw machines |
| 703,121 | Jun. 24, 1902 | W.S. Davenport | Slotting Mechanism for Screw-Machines | screw machines |
| 1,127,754 | Feb. 09, 1915 | J.J. Grant | Nut-machine | nut or bolt making machines |
| 1,254,933 | Jan. 29, 1918 | A. Abbey, E. Peuch | Drilling, Screw Cutting , and Other Similar Machine | drill press chucks |
| 1,690,568 | Nov. 06, 1928 | E.P. Bullard, Jr. | Turret Head for Machine Tools | turret lathes |
| 1,796,790 | Mar. 17, 1931 | E.S. Ingraham | Attachment for automatic screw machines | |
| 1,906,099 | Apr. 25, 1933 | C.A. Rich | Nut Making Machine | |
| 2,042,687 | Jun. 02, 1936 | K. Tessky | Automatic Lathe | metal lathes |
| 2,363,033 | Nov. 21, 1944 | C.H. Adams | Double End Tooling Mechanism and Attachment | metalworking machine tool holders |
| 2,581,609 | Jan. 08, 1952 | L. Small | Diamond tool | grinder dressers |
| 2,749,811 | Jun. 12, 1956 | J.J. Lenert, O.W. Barker | Transfer Machines | milling machines |
