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| Patents for O. K. Tool Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 713,001 | Nov. 04, 1902 | C.W. Grant | Cutting-off Tool | lathe tools | |
| 1,472,960 | Nov. 06, 1923 | G.W. Conklin | Disk Cutter Having Staggered Series of Side Teeth | milling machine cutters | |
| 1,495,067 | May 20, 1924 | G.W. Conklin | Hob Having Side-tooth Inserts | gear cutting tools | |