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| Patents for William Spencer Doig | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-39,562 | Jul. 30, 1892 | W.S. Doig | Nailing machine | nailing machines | |
| CA-39,568 | Jul. 30, 1892 | W.S. Doig | Machine for nailing boxes | nailing machines | |
| CA-42,938 | May 18, 1893 | W.S. Doig | Box nailing machine | nailing machines | |
| CA-48,683 | Apr. 18, 1895 | W.S. Doig | Nail clinching attachment for nailing machine | nailing machines | |