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| Patents for Charles L. Clarke | |||||
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| Picture | Number | Date | Patentee | Title | |
| 284,382 | Sep. 04, 1883 | C.L. Clarke | Circuit and Apparatus for Electric Temperature and Pressure Indicator | ||
| 305,939 | Sep. 30, 1884 | C.L. Clarke, J. Leigh | Machine for Coiling Wire and Thread in the Manufacture of Induction and Resistance Coils | ||