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| Patents for Bernard J. Hausfeld | |||||
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| Number | Date | Patentee | Title | Type | |
| 513,683 | Jan. 30, 1894 | F. Holz | Milling Machine | milling machines | |
| 554,423 | Feb. 11, 1896 | F. Holz | Milling Machine | milling machines | |
| 582,341 | May 11, 1897 | P.H. Campbell | Wrench | pipe wrenches | |