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| Patents for George W. Hael | |||||
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| Number | Date | Patentee | Title | Type | |
| 303,003 | Aug. 05, 1884 | G.W. Hael | Screw holding screwdriver | screwdriver blades | |
| 306,394 | Oct. 14, 1884 | G.W. Hael | Screw holding screwdriver | screwdriver blades | |