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| Patents for A. Lockhart | |||||
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| Number | Date | Patentee | Title | Type | |
| 334,038 | Jan. 12, 1886 | L.H. Nash | Governor for Gas Engines | internal combustion engine governors | |
| 386,216 | Jul. 17, 1888 | L.H. Nash | Ignitor and Supply Valve for Gas Engines | ignition systems | |