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| Patents for Alfred Derouin | |||||
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| Number | Date | Patentee | Title | Type | |
| 336,130 | Feb. 16, 1886 | G.H. Millen, A. Derouin | Dovetailing-machine | dovetailing machines | |
| CA-33,513 | Jan. 25, 1890 | A. Derouin | Wood turning machine | pattern lathes | |
| 453,965 | Jun. 09, 1891 | A. Derouin | Wood-turning machine | wood lathes | |