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| Patents for Hugh Fairgrieve | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-8,291 | Jan. 01, 1878 | H. Fairgrieve | Improvement on steam engine valves | ||
| CA-11,734 | Jan. 01, 1880 | H. Fairgrieve, J.H. Killey | Improvements in steam engines | steam engines | |