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| Patents Granted on 1949-12-13 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,490,877 | Dec. 13, 1949 | O. Lindfors | Motor Starting Control Switch | motor controls | |
| 2,490,923 | Dec. 13, 1949 | A.M. Sasgen | Quick action C-clamp | C clamps | |
| 2,491,089 | Dec. 13, 1949 | R.L. Cowden | Socket Wrench | socket wrenches | |
| 2,491,398 | Dec. 13, 1949 | W.L. Tancred | Contouring Machine | profile and contour grinders | |
| 2,491,403 | Dec. 13, 1949 | K.H. Wills | Indicator and Control Means for Lead Screw Correction | thread measuring machines | |