| Patents Granted on 1840-12-?? |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 1,879 | Dec. 01, 1840 | N.J. Wyeth | Machine for reducing blocks of ice to a uniform thickness and cutting parallel ridges on the upper surface of the same | ice tools |
| 1,882 | Dec. 05, 1840 | S. Andrews | Manner of constructing padlocks for mail-bags and other uses | padlocks |
| 1,895 | Dec. 10, 1840 | M. Gregg | Machine for cutting round tenons and for cutting or turning other articles of wood into a cylindrical form | hollow bits |
| RE29 | Dec. 28, 1840 | C. Manning | Improvement in machines for cutting staves, &c. | cooper |
| 1,915 | Dec. 28, 1840 | R. Porter | Fire-alarm | fire alarms |
| 1,919 | Dec. 28, 1840 | A. Stillman | Coffee | coffee roasters |
| GB-184,008,764 | Dec. 31, 1840 | J. Stubs | Improvements in the construction of screw wrenches and spanners, for screwing and unscrewing nuts and bolts | screw adjust wrenches |
