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| Patents for William S. Doig | |||||
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| Number | Date | Patentee | Title | Type | |
| 600,685 | Mar. 15, 1898 | W.S. Doig | Cleat-nailing machine | nailing machines | |
| 642,212 | Jan. 30, 1900 | W.S. Doig | Box-nailing machine | nailing machines | |
| 663,223 | Dec. 04, 1900 | W.S. Doig | Box-making machine | box making machines | |