| All Patents in class 408 |
Patents 2326 -
2340
of 3503
      |
| Number | Date | Patentee | Title | Type |
| 1,549,178 | Aug. 11, 1925 | B.S. Bishop | Tapping machine | tapping machines |
| 1,550,609 | Aug. 18, 1925 | W.R. Fox, H.D. Corwin | Metal-working machine | |
| 1,557,241 | Oct. 13, 1925 | J.C. Carlton | Friction Clutch | radial drill presses |
| 1,559,190 | Oct. 27, 1925 | C.F. Sherman | Drill press | drill presses |
| 1,559,944 | Nov. 03, 1925 | G.W. Emrick | Clutch construction for tapping attachments and the like | tapping heads and chucks |
| 1,560,462 | Nov. 03, 1925 | R.A. Boehm | Self Opening and Closing Threading Die Holder | tap and die holders |
| 1,560,487 | Nov. 03, 1925 | A.A. Shafer | Automatic Screw Threading Machine | metal threading machines |
| 1,562,862 | Nov. 24, 1925 | C. Bodmer | Ratchet screw driver | ratcheting screwdrivers |
| 1,563,108 | Nov. 24, 1925 | A.J. Prance | Thread-cutting die | tapping heads and chucks |
| 1,564,460 | Dec. 08, 1925 | F.L. Young | Drill | handheld power drills |
| 1,571,620 | Feb. 02, 1926 | F.M. Bettes | Drill holder | handheld power drills |
| 1,571,893 | Feb. 02, 1926 | R.L. Rickwood, D.C. Klausmeyer | Radial Drill Column Clamp | radial drill presses |
| 1,573,551 | Feb. 16, 1926 | D.C. Klausmeyer | Peep Hole for Threads | radial drill presses |
| 1,573,552 | Feb. 16, 1926 | D.C. Klausmeyer | Column Binder Control Linkage | radial drill presses |
| 1,574,727 | Feb. 23, 1926 | E.P. Bullard, Jr. | Multiple-Spindle Continuous-Drilling Tool | vertical boring mills |
