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| All Patents in class 417/101 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,786 | Sep. 23, 1842 | R.G. Eunson | Mode of discharging water and air from the condensers of steam-engines | steam engines | |
| 295,676 | Mar. 25, 1884 | G. Ross | Air-pump | ||