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| All Patents in class 414/729 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,653,502 | Sep. 29, 1953 | H.J. Siekmann, W.R. Meyer | Work Handling Appparatus for Crankshaft Lathes | ||
| 3,451,125 | Jun. 24, 1969 | R. Lehmkuhl | Automatic Tool Changer | ||
| 3,964,616 | Jun. 22, 1976 | T.W. Piotrowski | Machine Tool Interchange Arm | ||
| 3,990,585 | Nov. 09, 1976 | O.R. Johansson | Article Exchange Mechanism | ||