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| Patents for J. W. McKenzie | |||||
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| Number | Date | Patentee | Title | Type | |
| 59,848 | Nov. 20, 1866 | J. Lochhead | Improvement in balance slide valves | steam engine valves | |
| 153,122 | Jul. 14, 1874 | L. Shane | Improvement in Planes | plane fences | |