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| Patents for M. A. Leyden | |||||
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| Number | Date | Patentee | Title | Type | |
| 591,561 | Oct. 12, 1897 | H.A. Moyer, C.J. Graf | Thill-coupling | ||
| 592,869 | Nov. 02, 1897 | H.A. Hannum | Rotary Cutter | leather shearing machines | |