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| All Patents in class 470/148 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,691,878 | Nov. 13, 1928 | J.R. Blakeslee | Metal Working | dies for punch presses | |
| 1,691,879 | Nov. 13, 1928 | J.R. Blakeslee | Forging Mechanism | forging apparatus and accessories | |
| 2,639,632 | May 26, 1953 | H.P. Boggis, F.F. Criley | Forging machine | forging machines | |