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| Patents for Willmore B. Stone | |||||
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| Number | Date | Patentee | Title | Type | |
| D10,015 | May 29, 1877 | L.L. Davis | Design for Spirit Levels | metallic levels | |
| D10,016 | May 29, 1877 | L.L. Davis | Design for Spirit Levels | metallic levels | |
| D10,017 | May 29, 1877 | L.L. Davis | Design for Spirit Levels | machinist levels | |