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| All Patents in class 417/156 | |||||
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| Number | Date | Patentee | Title | Type | |
| 824,004 | Jun. 19, 1906 | O.S. French | Spark-Arrester | traction engine spark arresters | |
| 1,569,515 | Jan. 12, 1926 | A.G. Machesney | Locomotive Exhaust Nozzle Covering | steam engines | |