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| Patents for Oscar A. Smith | |||||
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| Number | Date | Patentee | Title | Type | |
| 975,728 | Nov. 15, 1910 | O.A. Smith | Nut Feed for Tapping Machine | ||
| 1,008,677 | Nov. 14, 1911 | O.A. Smith | Tool Holder or Bracket | metalworking machine tool holders | |
| 1,038,670 | Sep. 17, 1912 | O.A. Smith | Threading Die | ||
| 1,057,014 | Mar. 25, 1913 | O.A. Smith | Die | ||
| 1,085,800 | Feb. 03, 1914 | W. Crandall | Box-tool | lathe tools | |
| 1,256,180 | Feb. 12, 1918 | O.A. Smith | Drill-machine | drill presses | |