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| Patents for Hannan & Buchanan | |||||
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| Number | Title | Classification(s) | |||
| GB-186,101,598 | Improvements in indicators such as are used for ascertaining the power developed by steam engines | ||||
| 117,682 | Improvement in bearings for machinery | 116/101, 116/106, 116/165, 246/169R, 246/DIG.002 | |||
| GB-189,207,180 | Steam-engine indicators | ||||