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| Patents for Minerva R. Pitts | |||||
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| Number | Date | Patentee | Title | Type | |
| 570,056 | Oct. 27, 1896 | C.F. Richardson | Spirit Level | levels | |
| 582,154 | May 04, 1897 | E.C. Clapp | Micrometer Gage | micrometers | |
| 601,800 | Apr. 05, 1898 | L.S. Starrett | Speed Indicator | measurement gauges | |