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| Patents for Lester D. Dana | |||||
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| Number | Date | Patentee | Title | Type | |
| 205,362 | Jun. 25, 1878 | L.D. Dana | Improvement in friction-clutches | industrial machine clutches | |
| 205,416 | Jun. 25, 1878 | L.D. Dana, F.D. Randall | Improvement in Grinding-Machines | grinders | |
| 254,283 | Feb. 28, 1882 | L.D. Dana | Friction-clutch | industrial machine clutches | |
| 431,446 | Jul. 01, 1890 | L.D. Dana | Friction-clutch | industrial machine clutches | |