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| Patents for D. June & Co. | |||||
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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 | |
| 190,275 | Mar. 03, 1877 | O.S. French, D. June, R. Brayton | Improvement in Spark-Arresters | steam spark arresters | |