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| Patents for Carl I. Trees | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,124,113 | Nov. 07, 1978 | C.I. Trees | Case Indexer | spacing machines | |
| 4,164,296 | Aug. 14, 1979 | C.I. Trees | Apparatus for Transferring and Rotating Articles | conveyors and hoppers | |