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| Patents for Robert E. Blake | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,080,969 | Mar. 12, 1963 | R.E. Blake | Sorting apparatus | sawmill lumber conveyors | |
| CA-678,591 | Jan. 21, 1964 | R.E. Blake | Lumber sorting apparatus | sawmill lumber conveyors | |