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| Patents for Robert Smith | |||||
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| Number | Date | Patentee | Title | Type | |
| 292X | May 19, 1800 | R. Smith | Mould board plow | plows | |
| 4,144X | Jun. 09, 1825 | R. Smith | Alternate propelling lever | ||
| 24,009 | May 17, 1859 | R. Smith, C.L. Crowell | Upsetting Tires | ||