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| Patents for D. A. Woodbury & Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 23,521 | Apr. 05, 1859 | D.A. Woodbury | Variable cut-off for steam-engines | steam engines | |
| 23,737 | Apr. 19, 1859 | D.A. Woodbury | Variable cut-off gear for steam-engines | steam engines | |
| 331,018 | Nov. 24, 1885 | D.A. Woodbury | Balanced Slide Valve | steam engine valves | |