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| Patents Granted on 1957-11-12 | |||||
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| Number | Date | Patentee | Title | Type | |
| D181,400 | Nov. 12, 1957 | S.M. Babbitt | Precision boring machine | drill presses | |
| 2,812,621 | Nov. 12, 1957 | R.C. Evans, W.J. Blazek, C.R. Barkley | Apparatus for automatically forming and finishing grooves in workpieces | sharpening machines | |
| 2,812,678 | Nov. 12, 1957 | G.L. Boley | Tool Block Holder | lathe tool holders and tool posts | |