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| Patents for James F. McElroy | |||||
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| Number | Date | Patentee | Title | Type | |
| 519,338 | May 08, 1894 | J.F. McElroy | Electric Switch | electric switches | |
| 578,759 | Mar. 16, 1897 | J.F. McElroy | Rotary Engine | rotary steam engines | |
| 845,672 | Feb. 26, 1907 | J.A. Thompson | Nail-extractor | nail extractors | |