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| All Patents in class 55/323 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,254X | Nov. 23, 1835 | G. Holbrook | Spark catcher for locomotives | ||
| 661,854 | Nov. 13, 1900 | X. De le Croix | Gas-Engine Attachment | gas and gasoline engines | |
| 2,990,032 | Jun. 27, 1961 | R.L. Sandvig | Separator for use with rock drills | separators | |