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| All Patents in class 91/436 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,990,052 | Feb. 05, 1935 | A.M. Sosa | Fluid actuated drill feed | radial drill presses | |
| 2,502,547 | Apr. 04, 1950 | C.E. Adams | Hydraulic apparatus | ||
| 2,751,822 | Jun. 26, 1956 | B.P. Schiltz | Broaching machine with anti-chatter control | broaching machines | |
| 3,537,356 | Nov. 03, 1970 | E.I. Odell | Hydraulic Control System | machine tool controls | |