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| Patents for C. B. Doyle | |||||
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| Number | Date | Patentee | Title | Type | |
| 525,810 | Sep. 11, 1894 | A.H. Fleming | Watchmaker's Tool | watchmakers lathes | |
| 566,335 | Aug. 25, 1896 | J.A. Griffin, J.B. McCarthy | Calf Weaner | animal weaners | |