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| Patents for A. L. G. Peirce | |||||
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| Number | Date | Patentee | Title | Type | |
| 92,848 | Jul. 20, 1869 | J.F. Letellier | Governor | steam engine governors | |
| 96,450 | Nov. 02, 1869 | J.F. Letellier, A. Leitelt | Improvement in sawing-machine | circular ripsaws | |