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| Patents for Frederick L. Brown | |||||
| Picture | Number | Date | Patentee | Title | |
| 909,748 | Jan. 12, 1909 | I.W. Sprink, F.L. Brown | Automatic Die Head | ||
| 909,749 | Jan. 12, 1909 | I.W. Sprink, F.L. Brown | Adjustable Collapsing Tap | ||