| Patents Granted on 1850-03-12 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| D270 | Mar. 12, 1850 | W.P. Cresson, D. Stuart, P. Seibert | Design for cast iron parlor air-tight stove | |
| 7,156 | Mar. 12, 1850 | J.T. Bruen | Cutting figures in relief on wood | specialty woodworking machines |
| 7,162 | Mar. 12, 1850 | A. Fessenden | Machinery for making pill-boxes | box making machines |
| 7,167 | Mar. 12, 1850 | G. Hotchkiss | Noddle-iron for sawmills | reciprocating sawmills |
| 7,178 | Mar. 12, 1850 | J. Culbertson, E. Williams | Machine for Giving Increased Twist in Cutting Rifles | rifling machines |
| GB-185,013,004 | Mar. 12, 1850 | J. Nasmyth | Obtaining and applying heat | |
