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| Patents Granted on 1930-04-15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,754,222 | Apr. 15, 1930 | E.L. Connell | Electric drill | ||
| 1,754,267 | Apr. 15, 1930 | A.M. Dellinger | Gear mechanism | grinding mills | |
| 1,754,470 | Apr. 15, 1930 | J.R. Kerlin | Bending machine | metal bending machines | |
| 1,754,621 | Apr. 15, 1930 | W.R. Fox, H.D. Corwin | Tapping or like machine | tapping machines | |
| 1,755,152 | Apr. 15, 1930 | J.W. Parker | Radius Tool | radius gauges | |