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| Patents Granted on 1961-05-23 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,984,953 | May 23, 1961 | N.D. Neal | Electrical Gauging Device | electronic gauges | |
| 2,985,040 | May 23, 1961 | W.R. Border, Jr. | Variable Cylinder Boring Jig | boring bars | |
| 2,985,109 | May 23, 1961 | W. Ernst | Hydraulic Pump | hydraulic apparatus | |
| 2,985,456 | May 23, 1961 | A.M. Stoner | Multiple-screw actuated collet chuck | metal lathe chucks | |