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| Patents for Oscar McGruder Cox | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,028,190 | Jun. 04, 1912 | O.M. Cox | Traction Engine | ||
| 1,061,453 | May 13, 1913 | O.M. Cox | Traction Engine | ||
| 1,099,538 | Jun. 09, 1914 | O.M. Cox | Traction Engine | ||