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| Patents for Frank E. Hartley | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 381,968 | May 01, 1888 | N. Tesla | Electro-magnetic motor | |
 | 381,969 | May 01, 1888 | N. Tesla | Electro-magnetic motor | |
 | 408,565 | Aug. 06, 1889 | G.D. Woodworth | Cigar Box Opener | |
| 416,194 | Dec. 03, 1889 | N. Tesla | Electric Motor | ||