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| Patents for Thomas C. Ashley | |||||
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| Number | Date | Patentee | Title | Type | |
| 359,722 | Mar. 22, 1887 | J.F. Guthrie, Jr. | Improvement In Pipe-Wrenches | pipe wrenches | |
| 384,971 | Jun. 26, 1888 | J.F. Guthrie, Jr. | Spring Dividers | dividers | |
| 411,807 | Oct. 01, 1889 | J.F. Guthrie, Jr. | Flange Wrench | flange wrenches | |