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| Patents Granted on 1852-05-04 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,922 | May 04, 1852 | A. Hotchkiss | Adjustable Screw-Slide Wrench | screw adjust wrenches | |
| 8,923 | May 04, 1852 | J. McClintic | Differential safety-valve | steam safety valves | |
| 8,929 | May 04, 1852 | W. Southwell | Machinery for grinding or polishing saw-blades, &c. | tool making | |
| 8,931 | May 04, 1852 | D.H. Thompson | Window-blind machinery | windowblind machines | |