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| Patents for Christian Black | |||||
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| Number | Date | Patentee | Title | Type | |
| 516,182 | Mar. 13, 1894 | C. Black | Wrench | pipe and nut combination wrenches | |
| CA-46,266 | Jun. 06, 1894 | C. Black | Wrench | quick adjust wrenches | |
| 546,295 | Sep. 17, 1895 | C. Black | Improvements in Sliding-Jaw Wrenches | pipe wrenches | |