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| Patents Granted on 1850-05-07 | |||||
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| Number | Date | Patentee | Title | Type | |
| RE168 | May 07, 1850 | B. Holly | Improvement in Pumps | pumps | |
| RE169 | May 07, 1850 | S. Merrick | Improvement in feeders for screw-machines | screw machines | |
| 7,350 | May 07, 1850 | C. Richardson | Steam Engine Valve Gear | steam engine valve gear | |
| 7,353 | May 07, 1850 | T.C. Theaker | Improvement in Oscillating Valves of Steam Engines | steam engine valves | |