| Patents Granted on 1850-04-?? |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| XC-291 | Apr. 02, 1850 | W.R. Seaver | Seaver's improved stave dresser | cooper |
| XC-292 | Apr. 02, 1850 | W.R. Seaver | Seaver's improved stave joiner | cooper |
| 7,229 | Apr. 02, 1850 | H. Aiken | Clamp | |
| 7,234 | Apr. 02, 1850 | W. Davis | Sawmill | reciprocating sawmills |
| 7,242 | Apr. 02, 1850 | D. Hicks | Attachment of the Forge-Hammer to its Helve | trip and helve hammers |
| 7,257 | Apr. 09, 1850 | D.H. Chamberlain | Divider or Compass | dividers |
| 7,262 | Apr. 09, 1850 | J. Johnson | Woodworker's Leg Vise | leg vises |
| 7,263 | Apr. 09, 1850 | W.G. Ladd, Jr. | Fluid Level | inclinometers |
| 7,264 | Apr. 09, 1850 | S. Lewis | Machine for cutting screws on the rails of bedsteads | wood threading machines |
| 7,278 | Apr. 09, 1850 | M. Wilder | Mill Shaft Spindle | industrial machine shaft couplings |
| 7,311 | Apr. 23, 1850 | H.G. Thompson | Lathe for making pistons for rotary steam-engines | metal lathes |
| 7,322 | Apr. 30, 1850 | H. Elliott | Gearing for Regulating Speed | industrial machine speed and direction changing mechanisms |
| 7,325 | Apr. 30, 1850 | S.E. Parsons, E.H. Parsons | Hanging saws in sawmills | sawmills |
| 7,326 | Apr. 30, 1850 | S. Peck | Daguerreotype-Plate Holder | |
| 7,329 | Apr. 30, 1850 | E. Brecht, W.H. Trissler | Roasting Coffee | coffee roasters |
