| All Patents in class 74/89.38 |
Patents 16 -
22
of 22
      |
| Number | Date | Patentee | Title | Type |
| 2,257,364 | Sep. 30, 1941 | H.F. Bakewell | Machine tool | tapping machines |
| 2,321,442 | Jun. 08, 1943 | J.C. Wilson | Collapsible antifriction nut | industrial machine clutches |
| 2,344,039 | Mar. 14, 1944 | F.W. Hack | Multiversal Machine Tool and Boring Head Therefor | vertical boring mills |
| 2,748,665 | Jun. 05, 1956 | J.A. Sean | Machine Tool Positioning Mechanism | metalworking machine mechanisms |
| 2,749,812 | Jun. 12, 1956 | T.A. Wetzel | Ball Bearing Nut and Screw Mechanism | milling machines |
| 2,770,821 | Nov. 20, 1956 | W.J. Adlaf | Lead Screw Tapping Attachment Having Torque Responsive Feed Nut | tapping heads and chucks |
| 2,903,902 | Sep. 15, 1959 | C.A. Berggren | Backlash takeup mechanism | |
