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| All Patents in class 470/902 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,786,148 | Dec. 23, 1930 | E.P. Bullard, Jr. | Station-Type Drilling and Tapping Machine | ||
| 1,918,150 | Jul. 11, 1933 | G. Swahnberg, E.J. Kingsbury | Multiple head automatic drilling machine | multiple spindle drill presses | |
| 1,976,105 | Oct. 09, 1934 | W.D. Archea | Milling Machine | milling machines | |
| 2,364,884 | Dec. 12, 1944 | W.H. Weimer | Work clamping means for machine tools | milling machines | |