| All Patents in class 74/343 |
Patents 1 -
5
of 5
      |
| Number | Date | Patentee | Title | Type |
| 407,339 | Jul. 23, 1889 | H.E. Eberhardt, U. Eberhardt | Drilling Machine | drill presses |
| 1,018,081 | Feb. 20, 1912 | H.P. Reston | Gearing | metalworking machine gearing |
| 1,581,927 | Apr. 20, 1926 | G.L. Kollock | Two-speed gearing for electric drill | handheld power drills |
| 1,947,862 | Feb. 20, 1934 | H.N. Stephan, H.M. Lucas | Special High Speed Drive for the Spindle of Boring Machine and Other Machine Tools | horizontal boring mills |
| 2,963,944 | Dec. 13, 1960 | S.C. Straus | Convertible Milling Machine | milling machines |
