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| Patents for Frey, Sheckler & Hoover Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 134,425 | Dec. 31, 1872 | F.E. Frey | Flexible Saw Filing Apparatus | |
| 385,317 | Jun. 26, 1888 | R. Niedergesaess | Lubricating Die for Brick and Tile Machines | ||