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| Patents for George G. Haddow | |||||
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| Number | Date | Patentee | Title | Type | |
| 381,857 | Apr. 24, 1888 | J.N. Skinner | Drill Chuck | drill press chucks | |
| 390,604 | Oct. 02, 1888 | M.C. Johnson | Lathe-tool | lathe tools | |