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| All Patents in class 483/57 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,288,032 | Nov. 29, 1966 | H.E. Shelley, E. Park, E. Pankonin | Tool Changing Apparatus for Milling Machines and the Like | milling machine accessories | |
| 3,298,098 | Jan. 17, 1967 | W.C. Gleisner | Machine Tool with Tool Changer | milling machines | |