| Patents Granted on 1850-03-?? |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 7,133 | Mar. 05, 1850 | G. Bonwile | Machine for planing slats for blinds | windowblind machines |
| 7,143 | Mar. 05, 1850 | J. MacGregor, Jr. | Heating-furnace | |
| 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 | |
| D271 | Mar. 19, 1850 | W.P. Cresson, D. Stuart, P. Seibert | Design for air-tight parlor stove | |
| 7,181 | Mar. 19, 1850 | J.B. Chatain | Machine for planing ornamental moldings | molders |
| 7,185 | Mar. 19, 1850 | S. Fahrney | Tool for preparing hubs for boxes | drilling and boring |
| NS-11 | Mar. 21, 1850 | J.W. Ross | For the manufacture or composition of artificial slate | |
| 7,211 | Mar. 26, 1850 | R. Cook | Smoke Consuming Tuyere | |
