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| Patents for O. K. Tool Holder Co. | |||||
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| Number | Title | Classification(s) | |||
| 677,350 | Tool-holder | 407/98 | |||
| 776,250 | Adjustable tool-holder | 279/83, 407/97 | |||
| 788,206 | Tool-post | 82/161 | |||
| 802,206 | Tool-holder | 407/102 | |||
| 807,166 | Tool-holder and tool | 407/102, 407/112, 407/64, 407/88, 408/188, 408/239R, 411/395, 470/80, 470/98 | |||
| 810,307 | Tool-holder | 30/168, 407/109, 407/112 | |||
| 878,672 | Tool Holder | 407/101, 407/64, 407/82, 407/84 | |||
| 1,056,089 | Tool-holder | 407/108, 407/49, 407/53 | |||
| 1,063,659 | Milling-cutter | 144/230, 407/48, 407/99, 411/372 | |||