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| All Patents in class 104/46 | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,524X | Apr. 12, 1833 | J. Elgar | Revolving platform for railroads (Turntable) | ||
| 9,090X | Sep. 09, 1835 | J. Tustin | Rail-road revolving platform | ||