| Patents Granted on 1812-05-__ |
Patents 1 -
15
of 26
      |
| Number | Date | Patentee | Title | Type |
| 1,721X | May 01, 1812 | R. Canfield | Sawing machine | other wood sawing machines |
| 1,722X | May 04, 1812 | S.K. Gore | Travelling cross cut saw mill | sawmills |
| 1,723X | May 05, 1812 | J. Smith, C. Luther | Tanning | |
| 1,724X | May 06, 1812 | E. Town, S. Baldwin | Linen spinner | spinner |
| 1,725X | May 06, 1812 | E.M. Canviss | Pressing and rendering transparent horse hoofs and other corneus substances for making combs | |
| 1,726X | May 12, 1812 | P. Geiger | Breaking plaster of paris | paint grinding mills |
| 1,727X | May 12, 1812 | D. Dod | Steam engine | steam engines |
| 1,728X | May 12, 1812 | J. Grannis | Horse mills using weights | |
| 1,729X | May 12, 1812 | W. Stanton | Washing machine | washing machines |
| 1,730X | May 12, 1812 | D. Sperry | Boring hubs and felloes of wheels | drilling and boring |
| 1,731X | May 12, 1812 | D. Pettibone | Warming Rooms by Rarified Air Applicable to Ovens, Hot or Green Houses, Rooms, Etc. | furnaces |
| 1,732X | May 13, 1812 | W. Jones | Plugged Faucet | plumber |
| 1,733X | May 14, 1812 | G.W. Robinson | Moulds for casting metal buttons | button making machinery |
| 1,734X | May 15, 1812 | E. Hazard, J. White | Machine for cutting screws | screwcutting lathes |
| 1,735X | May 15, 1812 | R. Bailey | Fair dealer of the chartae lusoriae | |
