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| Patents for Frank Stewart | |||||
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| Number | Date | Patentee | Title | Type | |
| 135,467 | Feb. 04, 1873 | A.B. Corby | Improvement in machines for pointing pickets | stick pointing machines | |
| CA-68,866 | Oct. 02, 1900 | F.W. Martin, F. Stewart | Arc lamp | electric arc lamps | |
| 663,454 | Dec. 11, 1900 | F.W. Martin, F. Stewart | Electric-arc lamp | electric arc lamps | |