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| Patents Granted on 1942-04-28 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,281,307 | Apr. 28, 1942 | E.L. Johnson | Commutator lathe and mica trimmer | commutator dressing machines | |
| 2,281,353 | Apr. 28, 1942 | K.D. Hubbard | Full Universal All-Speed Milling Attachment | milling machine accessories | |
| 2,281,400 | Apr. 28, 1942 | H.R. Welby | Lubricating Device | flange lubricators | |
| 2,281,416 | Apr. 28, 1942 | G.H. Cote | Tool Holder | metalworking machine tool holders | |
| 2,281,420 | Apr. 28, 1942 | J.C. Drader | Built Up Abrasive | gear cutting tools | |