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| Patents for Cordelia O'Hearn | |||||
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| Picture | Number | Date | Patentee | Title | |
 | CA-74,997 | Mar. 04, 1902 | W.L. Schellenbach | Variable speed mechanism | |
 | CA-105,186 | May 07, 1907 | W.L. Schellenbach | Metal lathe | |