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| Patents for Brown Specialty Manufacturing Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 257,468 | May 09, 1882 | M.E. Campfield | Wrench | screw adjust wrenches | |
| 371,302 | Oct. 11, 1887 | M.E. Campfield | Rapid Transit Monkey Wrench | quick adjust wrenches | |
| 380,859 | Apr. 10, 1888 | M.E. Campfield | Combined Nut and Pipe Wrench | quick adjust wrenches | |
| 395,213 | Dec. 25, 1888 | M.E. Campfield | Machine For Truing and Dressing Wrench Blanks | ||