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| Patents for Frederic E. Frey | |||||
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| Number | Date | Patentee | Title | Type | |
| 134,425 | Dec. 31, 1872 | F.E. Frey | Flexible Saw Filing Apparatus | saw sharpening machines | |
| 252,451 | Jan. 17, 1882 | F.E. Frey | Saw-mill dog | sawmill dogs | |