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| All Patents in class 60/674 | |||||
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| Number | Date | Patentee | Title | Type | |
| 32,149 | Apr. 23, 1881 | J. Black, R.E. Rogers | Air and Steam Engine | air motors and turbines | |
| 421,475 | Feb. 18, 1890 | A. Schmid, J.C. Beckfeld | Gas Engine | gas and gasoline engines | |