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| Patents for Alexander McDonald | |||||
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| Number | Date | Patentee | Title | Type | |
| NS-97 | Jan. 22, 1863 | A. McDonald | Amalgamator | miner | |
| 59,498 | Nov. 06, 1866 | J. Woodville | Carpenter's Plane | jointer gauges | |
| 168,166 | Sep. 28, 1875 | A. McDonald | Improvement in Pipe-Tongs | pipe tongs | |
| 925,127 | Jun. 15, 1909 | A. McDonald | Rotary Engine | rotary steam engines | |