| All Patents in class 408/235 |
Patents 31 -
45
of 63
      |
| Number | Date | Patentee | Title | Type |
| 1,746,264 | Feb. 11, 1930 | D.C. Klausmeyer | Convertible Drilling and Tapping Machine | drill presses |
| 1,782,573 | Nov. 25, 1930 | A.M. Johnson | Machine tool | multiple spindle drill presses |
| 1,794,149 | Feb. 24, 1931 | J.G. Collins | Stand and control means for electric portable drills | |
| 1,861,954 | Jun. 07, 1932 | K.H. Conley | Counterbalancing Device for Machine Tools | |
| 1,893,965 | Jan. 10, 1933 | C.F. Sherman | Drill press | drill presses |
| 1,905,560 | Apr. 25, 1933 | J. Friedl | Drilling machine | drill presses |
| 1,928,756 | Oct. 03, 1933 | D.C. Klausmeyer | Spindle guide bracket | tapping machines |
| 1,976,945 | Oct. 16, 1934 | D.C. Klausmeyer | Safety limit trip for spindle feed | radial drill presses |
| 1,989,007 | Jan. 22, 1935 | G. Gorton | Machine Tool | milling machines |
| 1,999,197 | Apr. 30, 1935 | J.B. Kincaid, L.L. Schauer | Counterpoised Detachable Tool Head | metalworking machine mechanisms |
| 2,022,437 | Nov. 26, 1935 | A.M. Sosa, L.L. Schauer | Head and Spindle Counterbalance | metalworking machine mechanisms |
| 2,027,706 | Jan. 14, 1936 | L.L. Schauer, J.H. McKewen | Counterbalance valve | drill presses |
| 2,035,283 | Mar. 24, 1936 | C.J. Schroeder | Machine tool | |
| 2,079,371 | May 04, 1937 | G.W. Emrick | Tapping machine | tapping machines |
| 2,263,404 | Nov. 18, 1941 | O.W. Barker, J.B. Armitage | Boring and Milling Machine | milling machines |
