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| Patents for Leonard Kennedy | |||||
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| Number | Date | Patentee | Title | Type | |
| 398X | Sep. 07, 1802 | L. Kennedy | Improvement in Fastening, in Raising and Supporting Window Sashes | window sashes | |
| 864X | Apr. 26, 1808 | L. Kennedy | Washing machine | washing machines | |
| 1,921X | May 06, 1813 | D. Pettibone | Manufacturing plane irons and scythes | plane maker | |