| All Patents in class 241/257.1 |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 1,726X | May 12, 1812 | P. Geiger | Breaking plaster of paris | paint grinding mills |
| 4,504X | Jul. 31, 1826 | J. Webster | Machine for grinding shelled corn | miller |
| 4,748X | May 14, 1827 | A. Holcomb | Paint mill | paint grinding mills |
| 5,145X | Jun. 19, 1828 | J. Crail | Grist mill | grist mills |
| 5,334X | Jan. 14, 1829 | D.D. Demarest | Machine for grinding apples | apple graters |
| 5,381X | Mar. 03, 1829 | S. Cook | Trumpet mouthed mill for grinding paints | paint grinding mills |
| 5,696X | Oct. 31, 1829 | J. Reeder | Bark mill | bark processing machines |
| 6,966X | Mar. 15, 1832 | O.C. Harris | Machine for grinding indigo paints, etc. | miller |
| 7,103X | Jun. 04, 1832 | A. Bacon | Grist mill | miller |
| 7,814X | Nov. 19, 1833 | R. Kendall | Grist mill | grist mills |
| 8,700X | Mar. 18, 1835 | F. Smith | Mill for grinding grain with small stones | grist mills |
| 8,771X | Apr. 14, 1835 | P.M. Wright | Grist family mill | grist mills |
| 7,862 | Dec. 24, 1850 | J.N. Walker | Mill for grinding | grist mills |
| 182,891 | Oct. 03, 1876 | J. Chase | Improvement in wood-pulp engines | wood grinding machines |
| 220,626 | Oct. 14, 1879 | W.D. Leavitt | Improvement in machines for manufacturing flour | grist mills |
