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| Patents for A. F. Macdonald | |||||
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| Number | Date | Patentee | Title | Type | |
| 524,396 | Aug. 14, 1894 | W.B. Potter | Controller for Electric Motors | motor controls | |
| 583,935 | Jun. 08, 1897 | F.E. Case, W.B. Potter | Series Parallel Controller | motor controls | |
| 596,186 | Dec. 28, 1897 | E.W. Rice, C.P. Steinmetz | Phase Regulator | phase regulators | |
| 620,965 | Mar. 14, 1899 | E.W. Rice, C.P. Steinmetz | Alternating Current Motor | induction motors | |
| 620,966 | Mar. 14, 1899 | E.W. Rice, Jr., C.P. Steinmetz | Induction Motor | induction motors | |