| All Patents in class 279/43.2 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 269,264 | Dec. 19, 1882 | H.C. Cloyd | Boring-machine | portable timber mortisers |
| 287,809 | Nov. 06, 1883 | W. Devereux | Screw-Driver | screwdriver mechanisms |
| 768,113 | Aug. 23, 1904 | E.S. Costa | Self Tightening Tool Holder | tool holders |
| 1,092,012 | Mar. 31, 1914 | I. Botts | Lathe Tool Holder | lathe tool holders and tool posts |
| 1,535,281 | Apr. 28, 1925 | J. Zilliox | Wrench | wrench jaw components |
| 1,888,222 | Nov. 22, 1932 | A.E. Keating, H.B. Curtis | Screw Driver | screwdrivers |
| 2,038,602 | Apr. 28, 1936 | J.M. Redinger | Chuck | milling machine tools |
| 2,912,892 | Nov. 17, 1959 | J.H. Hoern | Continuous Boring and Turning Machines | vertical boring mills |
