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| Patents for Alsdorf & Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 415,969 | Nov. 26, 1889 | G.F. Hall | Tool Clamp | wrench handle components | |
| 451,183 | Apr. 28, 1891 | G.F. Hall | Wrench | quick adjust wrenches | |