| All Patents of Type: trade specific |
Patents 16 -
30
of 30
      |
| Number | Date | Patentee | Title | Type |
| 4,768X | May 25, 1827 | S.K. Gauntt (Gaunt) | Machine for crushing corn with the cob | trade specific |
| 4,858X | Aug. 22, 1827 | T.F. Mayhew | Gearing of cones for bowing hats | industrial machine gearing |
| 5,757X | Dec. 19, 1829 | O. Root | Machinery for setting up hat bodies, called the hat body forming machine | trade specific |
| 5,874X | Mar. 12, 1830 | W. Carlock | Machine for washing and cleaning hats | trade specific |
| 5,932X | Apr. 23, 1830 | I. Overall | Boring rocks | trade specific |
| 6,205X | Oct. 22, 1830 | W. Morris, J. Spinks | Boring earth for water | trade specific |
| 6,212X | Nov. 01, 1830 | L. Disbrow | Boring earth for water | trade specific |
| 6,411X | Mar. 09, 1831 | S. Boyden | Manufacturing malleable cast iron | trade specific |
| 6,445X | Apr. 05, 1831 | R. Wilcox | Metallurgical operations by chemical agents | trade specific |
| 6,446X | Apr. 05, 1831 | R. Wilcox | Metallurgical operations by anthracite coal | trade specific |
| 6,447X | Apr. 05, 1831 | R. Wilcox | Metallurgical operatons by bituminous coal, charcoal | trade specific |
| 6,449X | Apr. 06, 1831 | S. Boyden | Manufacturing malleable cast iron | trade specific |
| 7,328X | Dec. 14, 1832 | N. Callender | Manufacturing sheet iron, boiler, slit, and bar, also castings | trade specific |
| 7,698X | Aug. 05, 1833 | G. Beard, Jr. | Marking off and cutting out garments | trade specific |
| 7,962X | Jan. 18, 1834 | J.H. Chappell | Draughting and cutting garments | trade specific |
