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| Patents for Charles L. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,357,954 | Nov. 09, 1920 | C.S. We Mett, E.S. Perkins, C.L. Clark | Valve Spring Compressor | valve spring tools | |
| D76,122 | Aug. 21, 1928 | C.L. Clark | Combined Pole Line Wrench and Hammer | combination tools | |