| Patents Granted on 1811-04-__ |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| GB-181,103,428 | Apr. 01, 1811 | T.W. Sturgeon | Improvements on a micrometer | micrometers |
| GB-181,103,429 | Apr. 02, 1811 | S. Bentham | Laying foundations | structures |
| 1,484X | Apr. 04, 1811 | A. Eastman | Machine for wrought nails | nail making machines |
| 1,485X | Apr. 10, 1811 | W. Bailey | Stave and shingle machine | shingle machines |
| 1,486X | Apr. 10, 1811 | J. Morgan | Form of cossack boots or rather in the mode of cutting leather for the formation of boots of every description | |
| 1,487X | Apr. 10, 1811 | J. Barker | Tanning leather | |
| 1,488X | Apr. 10, 1811 | E.V. Freeman | Making gin | |
| 1,489X | Apr. 10, 1811 | J. Swain, H. Swain, J. Swain | Lee board | |
| 1,490X | Apr. 15, 1811 | O. Evans | Saw mills | sawmills |
| 1,491X | Apr. 16, 1811 | J. Bernard | Vibrating nail plates while cutting | nail making machines |
| 1,492X | Apr. 18, 1811 | W. Gamble | Distilleries and Kitchen Ranges | distilling apparatus |
| 1,493X | Apr. 24, 1811 | S. Kimball | Lever purchase machine for propelling boats, working mills | nautical propulsion apparatus |
| 1,494X | Apr. 25, 1811 | J.F. Randolph | Floating machine for supplying ships with fresh water | nautical pumps |
| 1,495X | Apr. 25, 1811 | A. Sherwood | Drum cooking stove | stoves |
| 1,496X | Apr. 25, 1811 | J. Sibley | Cramping Suwarrow boot legs | |
