| Patents Granted on 1842-12-?? |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 2,878 | Dec. 12, 1842 | W.L. Peters | Machine for mortising and tenoning | mortising machines |
| AI63 | Dec. 17, 1842 | E.B. Horn | Camphene-burning lamp | |
| AI64 | Dec. 21, 1842 | J. Whitehead | Regulating the drag of yarn in spinning | |
| GB-184,209,570 | Dec. 22, 1842 | R. Wilson | Improvements in locomotive and other steam-engines | steam engine valve gear |
| 2,895 | Dec. 31, 1842 | W. Douglas, B. Douglas | Pump | household hand pumps |
| 2,900 | Dec. 31, 1842 | J.T. Gilmore | Inclined Water Wheel | water wheels |
