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| Patents for Greig S. Butterworth | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,949,708 | Aug. 23, 1960 | G.S. Butterworth, J.G. Wiatt | Gage Head for In-Process Gaging in Machine Tool | electronic gauges | |
| 2,950,581 | Aug. 30, 1960 | G.S. Butterworth | Gaging Device | electronic gauges | |
| 3,037,332 | Jun. 05, 1962 | G.S. Butterworth, J.G. Wiatt | Machine Tool Sizing Device | electronic gauges | |