| Patents Granted on 1837-04-__ |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 164 | Apr. 17, 1837 | J. Van Winkle | Machine for Cramping Leather for Boot-Legs | cobbler |
| 166 | Apr. 17, 1837 | J. Barns | Standing Press | cotton presses |
| 167 | Apr. 17, 1837 | U. Emmons | Improvement in the mode of constructing single-rail railroads | railroad machines |
| 170 | Apr. 20, 1837 | G.E. Sellers | Improvement in concentrating-furnaces for smelting iron ores by the use of anthracite coal in which other kinds of fuel can be used | foundryman |
| 171 | Apr. 20, 1837 | F. Fredly | Ore Washer | ore processing apparatus |
| 182 | Apr. 29, 1837 | D. Leavitt | Improvement in many-chambered-cylinder fire-arms | firearms |
| 184 | Apr. 29, 1837 | I.L. Beckwith | Improvement in Spokeshaves | spokeshaves |
| 185 | Apr. 29, 1837 | L. Hedge | Double-Centered Joint for Rules | folding rule joints |
