| Patents Granted on 1818-04-?? |
Patents 1 -
15
of 18
      |
| Number | Date | Patentee | Title | Type |
| NX-181,804,071 | Apr. 07, 1818 | N. Porter | Churn | churns |
| GB-181,804,245 | Apr. 08, 1818 | W. Church | Certain improvements in the steam engine | rotary steam engines |
| 2,934X | Apr. 10, 1818 | B. Allison | Improvement in construction of stoves | stoves |
| 2,935X | Apr. 10, 1818 | J. Shaw | Improvement in hanging rudders | boats and ships |
| 2,936X | Apr. 10, 1818 | J.J. Giraud | Mode of propelling boats | nautical propulsion apparatus |
| 2,937X | Apr. 11, 1818 | J. Mount | Stoves | stoves |
| 2,938X | Apr. 11, 1818 | S.A. Sherwood | Straw Cutting Machine | hay or straw cutters |
| 2,939X | Apr. 11, 1818 | S. Nash | Machine for turning musket barrels | engine lathes |
| 2,940X | Apr. 11, 1818 | D. Grieve | Weaving machine | weaver |
| 2,941X | Apr. 16, 1818 | J. Adams | Cooking stove | |
| 2,942X | Apr. 16, 1818 | C. Eastman | Machine for drawing metallic tubes | |
| 2,943X | Apr. 21, 1818 | J. Evans (Evens) | Water wheel | water wheels |
| 2,944X | Apr. 27, 1818 | A. Tieman | Agency of dogs as a new power | |
| 2,945X | Apr. 28, 1818 | R. Huston, T. Bevley, J. Morton | Employing the waste steam | |
| 2,946X | Apr. 28, 1818 | J.L. Sullivan | Paddles for propelling ships | nautical propulsion apparatus |
