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| Patents for David June | |||||
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| Number | Date | Patentee | Title | Type | |
| 167,738 | Sep. 14, 1875 | O.S. French, D. June, R. Brayton | Spark-Arrester | traction engine spark arresters | |
| CA-7,735 | Aug. 09, 1877 | O.S. French, D. June, R. Brayton | Spark arrester | ||
| CA-9,206 | Sep. 24, 1878 | O.S. French, R. Brayton, D. June | Procede pour Endure les Bouilleurs des Chadieres | traction engine boilers | |