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| Patents for The Sheffield Gage Corp. | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,139,251 | Dec. 06, 1938 | W.F. Aller | Measuring Instrument | measurement gauges | |
| 2,216,795 | Oct. 08, 1940 | W.F. Aller | Measuring Instrument | measurement gauges | |