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| Patents for E. W. Laird | |||||
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| Number | Date | Patentee | Title | Type | |
| 257,468 | May 09, 1882 | M.E. Campfield | Wrench | screw adjust wrenches | |
| 282,600 | Aug. 07, 1883 | W.G. Avery | Saw Set and Punch | ||
| 285,796 | Oct. 02, 1883 | M.E. Campfield | Improvements in Blanks for Forging the Hammer-Jaws of Monkey Wrenches | wrench jaw components | |
| 354,770 | Dec. 21, 1886 | M.E. Campfield | Wrench | quick adjust wrenches | |