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| Patents for W. Giffard | |||||
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| Number | Date | Patentee | Title | Type | |
| 51,907 | Jan. 02, 1866 | W. Weild | Improvement in machines for winding sewing-thread upon spools | textile machines | |
| 57,057 | Aug. 07, 1866 | J. Gresham | Improvement in injectors for boilers | feedwater apparatus | |