| Patents Granted on 1852-04-13 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 8,868 | Apr. 13, 1852 | S. Andrews | Drop-Punch | drop hammers |
| 8,869 | Apr. 13, 1852 | W. Baker | Hinge | |
| 8,870 | Apr. 13, 1852 | R. Crosby, H.D. Edgcomb | Machine for tonguing boards | matchers |
| 8,872 | Apr. 13, 1852 | J. Hamilton | Reciprocating sawmill for cutting beveled pieces | reciprocating sawmills |
| 8,873 | Apr. 13, 1852 | J. Hamilton | Machinery for making casks | cooper |
| 8,878 | Apr. 13, 1852 | G.C. Taft | Double-Lever Box Opener | |
| 8,881 | Apr. 13, 1852 | J. Whitney | Feed apparatus of planing-machines | matchers |
