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| Patents for Alex. Dunbar & Sons Co., Ltd. | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-92,877 | May 02, 1905 | A. Dunbar, Jr., W. Dunbar, A. Dunbar, A. Dunbar | Gang saw | reciprocating sawmills | |
| 929,662 | Aug. 03, 1909 | A. Dunbar | Logging-engine | logging trucks | |