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| Patents for Albert L. Flack | |||||
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| Number | Date | Patentee | Title | Type | |
| 298,649 | May 13, 1884 | G.S. Yingling, H.T. Heller, A.L. Flack | Tack-Hammer | tack hammers | |
| 298,650 | May 13, 1884 | H.T. Heller, A.L. Flack, G.S. Yingling | Tack-Hammer | tack hammers | |