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| Patents for Doty Brothers & Richardson | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 52,273 | Jan. 30, 1866 | W.M. Doty, E.P. Doty, E. Doty | Washing-machine and churn-power | |
 | 54,701 | May 15, 1866 | E. Doty | Improved plug for washing-machines | |
 | 56,910 | Aug. 07, 1866 | W.M. Doty, E.P. Doty, E. Doty | Improvement in washing-machines | |
 | 73,701 | Jan. 28, 1868 | E. Doty, E.P. Doty | Improved washing-machine | |
 | 78,940 | Jun. 16, 1868 | W.M. Doty | Improved washing-machine | |