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| Patents for Charles Laurier | |||||
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| Number | Date | Patentee | Title | Type | |
| XC-6 | Oct. 31, 1826 | C. Laurier | Machine or instrument called 'Loch Terrestre,' for accurately ascertaining the number of rotatory motions or revolutions of carriage-wheels, millstones, &c. | rpm speed gauges and tachometers | |