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| Patents for Gregg N. Jonsson | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,074,772 | Feb. 21, 1978 | G.N. Jonsson | Torquing tool control circuit | ||
| 4,081,037 | Mar. 28, 1978 | G.N. Jonsson | Control system for a multiple spindle machine | ||