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| Patents for Rotex Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,845,102 | Jul. 29, 1958 | A.F. Woodell | Dado cutters | sawblades | |
| 4,866,319 | Sep. 12, 1989 | M.W. Crutchfield | Erasing machine | draftsman | |