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| Patents for Henry Gill | |||||
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| Number | Date | Patentee | Title | Type | |
| 55,066 | May 29, 1866 | J.L. Crist | Improved Hand-Wrench | nut wrenches | |
| 2,738,712 | Mar. 20, 1956 | H. Gill | Three Dimension Contouring Machine | milling machines | |
| 2,778,925 | Jan. 22, 1957 | H. Gill, J.G. Gross | Electrical Discharge Cutting Machine | electrical discharge machining | |
| 3,095,119 | Jun. 25, 1963 | H. Gill | Conveyor Mechanism | workpiece changers and storage mechanisms | |