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| Patents for A. Brackenridge | |||||
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| Number | Date | Patentee | Title | Type | |
| 380,740 | Apr. 10, 1888 | H.C. Balsbaugh | Surface Gage | surface gauges | |
| 382,854 | May 15, 1888 | H.C. Balsbbaugh | Slip and Shrinkage Gage | measurement gauges | |