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| Patents Granted on 1939-02-07 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,145,977 | Feb. 07, 1939 | B.N. Foster | Solenoid actuated valve | metalworking machine mechanisms | |
| 2,145,980 | Feb. 07, 1939 | O.E. Hadwiger, H.O. Schmidt | Sandpaper drum | sanding machines | |
| 2,146,195 | Feb. 07, 1939 | A. Schultz | Lap | hand laps | |
| 2,146,583 | Feb. 07, 1939 | O. Kylin | Chuck and bar feed | metal lathes | |
| 2,146,696 | Feb. 07, 1939 | L.W. Eggleston | Valve | heating apparatus | |