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| All Patents in class 91/285 | |||||
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| Number | Date | Patentee | Title | Type | |
| 72,714 | Dec. 31, 1867 | W. Ball | Steam Engine | steam engines | |
| 384,336 | Jun. 12, 1888 | W. Ross, G. Ross | Water-engine valve | ||
| 717,136 | Dec. 30, 1902 | E.E. Thomas | Engine | ||
| 1,912,413 | Jun. 06, 1933 | E.J. Svenson | Milling machine | ||
| 1,998,003 | Apr. 16, 1935 | L.F. Nenninger, C.W. Goodrich, H. Ernst | Hydraulic Feed Control | hydraulic apparatus | |
| 2,108,354 | Feb. 15, 1938 | F.A. Swanson | Blind end cylinder honing machine | ||