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| Patents Granted on 1948-12-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| D152,155 | Dec. 21, 1948 | S. Jacoff | Screw Driver | screwdriver handles | |
| 2,456,762 | Dec. 21, 1948 | J.C. Wilson | Apparatus for Crush Dressing Grinding Wheels | grinder dressers | |
| 2,456,847 | Dec. 21, 1948 | S.B. Underwood, L.M. Underwood | Saw stabilizer for saw filing machines | woodworking machine sharpening mechanisms | |
| 2,456,856 | Dec. 21, 1948 | C.J. Bath | Bolster Block | metal bending machines | |
| 2,457,040 | Dec. 21, 1948 | W.P. Hall | Boring Head | boring heads | |