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| Patent CA6,667 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,667 | Aug. 28, 1849 | R.R. Throckmorton | Planing-machine | wood planers | |
| CA-6,667 | Oct. 19, 1876 | G. Wells | Improvements in water engines and pumps | ||