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| Patents for Kenneth L. March | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,786,221 | Nov. 22, 1988 | K.L. March | Quick release chuck mechanism and method for achieving interchange ability of tool inserts therein | tapping machines | |
| 4,795,291 | Jan. 03, 1989 | K.L. March | Method for achieving interchangeability of tool inserts | tapping machines | |