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| Patents for Isidore V. Roy | |||||
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| Number | Date | Patentee | Title | Type | |
| 354,811 | Dec. 21, 1886 | I.V. Roy | Tablesaw for making curved pulley parts | pulley making machines | |
| 370,495 | Sep. 27, 1887 | I.V. Roy | Wooden Pulley | industrial machine pulleys and belt drive mechanisms | |