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| Patents for Robert Hoyle | |||||
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| Number | Date | Patentee | Title | Type | |
| XC-8 | Oct. 31, 1829 | R. Hoyle | Improved machine for dressing flax or hemp | flax and hemp machines | |
| XC-12 | Jun. 25, 1830 | R. Hoyle | Improved hydraulic steam engine | steam engines | |