| Patents Granted on 1852-05-?? |
Patents 1 -
9
of 9
      |
| 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 |
| 8,953 | May 18, 1852 | A.G. Bachelder | Saw Set | saw sets |
| 8,954 | May 18, 1852 | E. Booth | Straining saws in sawmills | reciprocating sawmills |
| GB-185,214,140 | May 22, 1852 | J. Mason, G. Collier | Improvements in machinery for preparing, spinning, twisting, doubling, and weaving cotton, wool and other fibrous materials | spinner |
| 8,966 | May 25, 1852 | J.B. Chambers | Mortising-machine | mortising machines |
| 8,976 | May 25, 1852 | D. Woodcock | Machine for jointing staves | barrel making machines |
