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| Patents Granted on 1957-12-24 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,817,151 | Dec. 24, 1957 | R.F. Arnold, R.G. Knudsen | Tappet or Valve Lash Gauge Holder | ||
| 2,817,257 | Dec. 24, 1957 | T.J. Kniser | Ratchet Wrench with Supplemental Head Turning Means | ratchet wrenches | |
| 2,817,259 | Dec. 24, 1957 | R. Heuser | Adjustment Locking Means for Adjustable Wrenches | screw adjust wrenches | |
| 2,817,827 | Dec. 24, 1957 | H.H. Burkhardt | Reversing mechanism for impact wrench | ||