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| Patents for Addison M. Little | |||||
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| Number | Date | Patentee | Title | Type | |
| 406,525 | Jul. 09, 1889 | A.M. Little, O.C. Little | Key Seat Cutting Machine | key seating machines | |
| 430,133 | Jun. 17, 1890 | A.M. Little | Mandrel for key-seat-cutting machines | broaching machines | |