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| Patents for George Hey | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,470,735 | Oct. 16, 1923 | J.A. Wilding, G. Hey | Multiple Spindle Drill Head | ||
| 1,526,282 | Feb. 10, 1925 | S.C. Smith, G. Hey | Multiple Spindle Drill Head | ||