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| All Patents in class 470/137 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,639,632 | May 26, 1953 | H.P. Boggis, F.F. Criley | Forging machine | forging machines | |
| 3,282,079 | Nov. 01, 1966 | A.R. Kull | Work Handling Mechanism for Forging Presses and the Like | workpiece changers and storage mechanisms | |