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| Patents for Charles F. Hammond | |||||
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| Number | Date | Patentee | Title | Type | |
| 687,407 | Nov. 26, 1901 | W. Runge | Drilling and tapping attachment for drill-presses | metalworking machines | |
| 692,988 | Feb. 11, 1902 | A.S. Davis | Drill-chuck | drill chucks | |
| 722,909 | Mar. 17, 1903 | W. Runge | Wheel-Attaching Device | metal lathes | |
| 745,576 | Dec. 01, 1903 | H.M. Darling | Tool-Rest for Lathes | metal lathes | |
| 766,529 | Aug. 02, 1904 | W. Runge | Clutch for lathes or other purposes | metal lathes | |