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| Patents for Leitelt Iron Works | |||||
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| Number | Date | Patentee | Title | Type | |
| 30,485 | Oct. 23, 1860 | J.F. Letellier | Steam Valve | steam engine valves | |
| 92,848 | Jul. 20, 1869 | J.F. Letellier | Governor | steam engine governors | |
| 1,861,786 | Jun. 07, 1932 | I.J. Lyons, A.G. Buchan | Mortising machine | mortising machines | |