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| Patents for Adolph F. Brewer | |||||
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| Picture | Number | Date | Patentee | Title | |
| 355,679 | Jan. 11, 1887 | A.F. Brewer | Supplemental Bed Plate Centering Device and Work Holder for Drilling or Slotting Machines | ||
| 403,175 | May 14, 1889 | A.F. Brewer | Gage for Grinding Twist or Flat Drills | ||