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| All Patents in class 271/38 | |||||
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| Number | Date | Patentee | Title | Type | |
| 637,324 | Nov. 21, 1899 | F.L. Cross | Sheet-feeding machine | printer | |
| 659,907 | Oct. 16, 1900 | S.K. White | Sheet-feeder | printer | |
| 2,660,430 | Nov. 24, 1953 | T.A. Ribich | Paper-stack conveyor controller for folding machine | printer | |