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| Patents for Clark-Feather Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| RE19,414 | Jan. 08, 1935 | I.J. Clark | Valve Spring Compressor | valve spring tools | |
| 2,091,500 | Aug. 31, 1937 | I.J. Clark | Valve Tool | valve spring tools | |