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| Patents for Sewall L. Abbott | |||||
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| Number | Date | Patentee | Title | Type | |
| 117,237 | Jul. 25, 1871 | S.L. Abbott | Improvement in Countersinks | countersinks | |
| RE4,754 | Feb. 13, 1872 | S.L. Abbott | Improvement in Countersinks | countersinks | |