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| Patents for J. Halpenny | |||||
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| Number | Date | Patentee | Title | Type | |
| 499,765 | Jun. 20, 1893 | A.E. Upton | Pipe-Wrench | pipe wrenches | |
| 511,746 | Jan. 02, 1894 | G.A. Bates | Self Registering Try Square | try squares | |
| 526,198 | Sep. 18, 1894 | W. Brodie, G.W. Pringle | Boring-machine | drilling and boring | |