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| Patents for H. Montgomery | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,426 | Feb. 07, 1844 | E.A. Lester | Oscillating Steam Engine | oscillating steam engines | |
| RX-116 | Jun. 13, 1848 | I. Adams | Improvement in Power Printing Presses | printing presses | |