| Patents Granted on 1815-04-__ |
Patents 1 -
15
of 19
      |
| Number | Date | Patentee | Title | Type |
| 2,285X | Apr. 01, 1815 | J. Jackson | Application of hat trimmings in making mockasons | |
| 2,286X | Apr. 01, 1815 | S. Allen | Cutting horn or tortoise shell for combs | |
| 2,287X | Apr. 01, 1815 | J. Kells (Kello) | Machinery for regulating power | |
| 2,288X | Apr. 01, 1815 | G. Lovett | Mode of preserving timber from being injured by worms under water | |
| 2,289X | Apr. 04, 1815 | G. Stiles | Floating battery or steam ship | |
| 2,290X | Apr. 04, 1815 | E. Smith, T.S. Barnum | Machine for knapping cloth | |
| 2,291X | Apr. 12, 1815 | W. Lawrence | Pin lathe for buttons | button making machinery |
| 2,292X | Apr. 12, 1815 | J.B. Collins | Improvement in the old single jointed pewter button mould for casting wire-eyed buttons | |
| 2,293X | Apr. 12, 1815 | J. Nichols, Jr. | Preparing colors with lime | |
| 2,294X | Apr. 26, 1815 | W.T. James | Stoves | stoves |
| 2,295X | Apr. 26, 1815 | G. Peck | Water wheel | water wheels |
| 2,296X | Apr. 26, 1815 | D. Bolles, W. James (Janes) | Metallic heddles or harnesses for weaving | weaver |
| 2,297X | Apr. 26, 1815 | C. Postley | Reservoir cooking stove | stoves |
| 2,298X | Apr. 28, 1815 | B. Wilbor | Steam engine | steam engines |
| 2,299X | Apr. 28, 1815 | A. Mathews | Manufacturing button moulds of wood | button making machinery |
