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| All Patents in class 157/12 | |||||
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| Number | Date | Patentee | Title | Type | |
| 293,307 | Feb. 12, 1884 | R.N. Caughell | Spoke Extractor | wheelwright | |
| 481,342 | Aug. 23, 1892 | W.F. Bowe | Spoke Extractor | spoke extractors | |
| 507,611 | Oct. 31, 1893 | R. Cameron | Bung or tenon extractor | wheelwright | |
| 770,474 | Sep. 20, 1904 | A.K. Olson | Spoke-puller | wheelwright | |