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| All Patents in class 198/664 | |||||
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| Number | Date | Patentee | Title | Type | |
| 233,320 | Oct. 19, 1880 | A.L. Brewer | Auger or Forcing Screw for Brick and Tile Machines | archimedean screws | |
| 383,556 | May 29, 1888 | A.H. Brainard | Conveyer | conveyors and hoppers | |