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| Patents for William Donovan | |||||
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| Number | Date | Patentee | Title | Type | |
| 537,708 | Apr. 16, 1895 | P. O'Connor, W. Donovan | Machine for manufacture of lumber | sawmill carriages | |
| 537,760 | Apr. 16, 1895 | D. Dumoulin | Sawmill-carriage | sawmill carriages | |