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| Patents for Charles S. Farquhar | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,354,937 | Oct. 05, 1920 | J.S. Alcorn | Differential gearing | motor vehicle gearing | |
| CA-222,025 | Aug. 08, 1922 | J.S. Alcorn | Differential gearing | ||