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| Patents for Davis Level & Tool Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 68,961 | Sep. 17, 1867 | L.L. Davis | Improvement in Adjustable Spirit Levels | metallic levels | |
| 185,830 | Jan. 02, 1877 | J.C. Marshall | Square | squares | |
| D10,014 | May 29, 1877 | L.L. Davis | Design for Spirit Levels | metallic levels | |
| 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 | |