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| Patents for Wilbur A. Leonard | |||||
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| Number | Date | Patentee | Title | Type | |
| 551,213 | Dec. 10, 1895 | W.A. Leonard | Friction Clutch | industrial machine clutches | |
| 873,441 | Dec. 10, 1907 | W.A. Leonard | Reversing tap-holder | tapping heads and chucks | |
| 876,723 | Jan. 14, 1908 | W.A. Leonard | Tap Holder | tap and die holders | |
| 976,270 | Nov. 22, 1910 | W.A. Leonard | Die Grinder | tool grinders | |