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| Patents for A. C. Allan & Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,198,309 | Sep. 12, 1916 | A.C. Allan | Wrench | quick adjust wrenches | |
| 1,306,794 | Jun. 17, 1919 | A.C. Allan | Wrench | self-adjust wrenches | |
| 1,337,986 | Apr. 27, 1920 | A.C. Allan | Pliers, Wrench and the Like | pliers type wrenches | |