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| Patents Granted on 1930-10-28 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,779,467 | Oct. 28, 1930 | S. Einstein | Process of Grinding | grinding machines | |
| 1,779,674 | Oct. 28, 1930 | A.M. Johnson | Rotary work support | tapping machines | |
| 1,779,823 | Oct. 28, 1930 | C.H. Norton | Automatic Cylindrical grinding machine | cylindrical grinders | |
| 1,779,857 | Oct. 28, 1930 | I. Shafer | Saw | ||