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| Patents for Emma Hack | |||||
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| Number | Date | Patentee | Title | Type | |
| 472,074 | Apr. 05, 1892 | F.V. Phillips | Sash-pulley | door and window hardware | |
| 474,686 | May 10, 1892 | J.L. Perry | Sandpapering-machine | sanding machines | |
| 475,440 | May 24, 1892 | J. Stenwall, Jr., B.F. Cummins | Perforating, dating, and receipting stamp | office worker | |