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| Patents Granted on 1947-10-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| RE22,929 | Oct. 21, 1947 | R.F. Bannow | Adapter with Swivel Joint | milling machines | |
| 2,429,250 | Oct. 21, 1947 | E.A. Reibig, C.A. Wiken | Grinding machine | ||
| 2,429,511 | Oct. 21, 1947 | A.H. Emery | Dial Bore Gage | ||