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| Patents for E. C. Davidson | |||||
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| Number | Date | Patentee | Title | Type | |
| 189,681 | Apr. 17, 1877 | W.F. Barnes, J. Barnes | Improvement in sawing-machines | human powered machines | |
| 321,853 | Jul. 07, 1885 | S.G. Randall | Mortiser-cutter | mortising machines | |
| 352,705 | Nov. 16, 1886 | P. Medart | Machine for straightening metal bars or pipes | metal straightening machines | |