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| Patents Granted on 1964-05-19 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,133,349 | May 19, 1964 | K.A. Riedel | Tool Changer for a Machine Tool | milling machines | |
| 3,133,617 | May 19, 1964 | P. Hartmann | Hydraulic variable speed drive | bench vises | |
| 3,133,740 | May 19, 1964 | A.W. Drantz | Hydraulic Type Holder for Drill Chucks and the Like | hydraulic apparatus | |