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| Patents for Henry A. Hannum | |||||
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| Number | Date | Patentee | Title | Type | |
| 592,869 | Nov. 02, 1897 | H.A. Hannum | Rotary Cutter | leather shearing machines | |
| 623,602 | Apr. 25, 1899 | H.A. Hannum | Die for Making Pinking Cutters | leather shearing machines | |