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| All Patents in class 209/586 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,979,079 | Oct. 30, 1934 | C.R. Ranney | Sorting Apparatus | sorting apparatus | |
| 3,918,586 | Nov. 11, 1975 | R.E. Tyler, P.M. Carter | Separating apparatus for flat pieces of different dimensions | plywood making machines | |