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| Patents for George W. Church Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 278,094 | May 22, 1883 | G.W. Church | Micrometer Gage | micrometers | |
| 527,207 | Oct. 09, 1894 | W. Lang | Speed Measure for Shafting | measurement gauges | |