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| Patents for MacDonald and Sons, Ltd. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | CA-136,213 | Oct. 17, 1911 | W.A. Hyle | Pipe Wrenches and the Like | |
 | 1,026,040 | May 14, 1912 | W.A. Hyle | Pipe Wrench | |