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| All Patents in class 408/702 | |||||
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| Number | Date | Patentee | Title | Type | |
| 494,461 | Mar. 28, 1893 | F.H. Cathcart | Power-Driven Tool | ||
| 2,863,339 | Dec. 09, 1958 | M.H. Emrick | Hydraulic air drilling unit | multiple spindle drill presses | |
| 3,071,989 | Jan. 08, 1963 | E.A. Timm | Feed mechanism for machine tools | hydraulic apparatus | |
| 3,091,137 | May 28, 1963 | O. Aronson | Drilling and tapping machine | drill presses | |