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| Patents for Lucius O. Barrett | |||||
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| Number | Date | Patentee | Title | Type | |
| 384,413 | Jun. 12, 1888 | L.O. Barrett | Double Gage | marking gauges | |
| 530,468 | Dec. 04, 1894 | L.O. Barrett | Metal Marking Gage | marking gauges | |