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| All Patents in class 271/197 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 3,084,491 | Apr. 09, 1963 | W.H. Solomon | Means for transporting flexible sheets | ||
| 3,228,273 | Jan. 11, 1966 | H.W. Huffman | Sheet delivery mechanism | ||
| 3,621,998 | Nov. 23, 1971 | V. Prochaska | Sheet grader | ||
| 3,918,586 | Nov. 11, 1975 | R.E. Tyler, P.M. Carter | Separating apparatus for flat pieces of different dimensions | ||