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| Patents Granted on 1963-05-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-663,552 | May 21, 1963 | A.M. Stoner | Multiple-screw actuated collet chuck | metal lathe chucks | |
| 3,090,126 | May 21, 1963 | J. Kernoski | Thread Dial Gage | measurement gauges | |
| 3,090,168 | May 21, 1963 | W.R. Carlsen | Tool Head for Finishing Machine | gear making machines | |
| 3,090,266 | May 21, 1963 | E.K. Wagner | Apparatus to Provide Constant Facing Speed | metalworking machine mechanisms | |
| 3,090,269 | May 21, 1963 | G.M. Porter | Adjustable angle travelling saw | radial arm saws | |