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| Patents for Charles F. Schenck | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,830,679 | Nov. 03, 1931 | C.F. Schenck | Drill spindle | drill presses | |
| 1,972,359 | Sep. 04, 1934 | C.F. Schenck | Feed mechanism for tool-carrying spindles | drill presses | |