Patents for Pitts Agricultural Works |
Patents 1 -
10
of 20
      |
Picture | Number | Date | Patentee | Title |
 | 19,769 | Mar. 30, 1858 | J. Grant | Horse Power |
 | 21,495 | Sep. 14, 1858 | G. Hely | Horse Power |
 | 22,950 | Feb. 15, 1859 | G. Hely | Horse Power |
 | 35,062 | Apr. 22, 1862 | S. Perry | Tread horse-power |
 | 35,063 | Apr. 22, 1862 | S. Perry | Improvement in circuit horse-powers |
 | 39,324 | Jul. 21, 1863 | S. Perry | Improvement in horse-powers |
 | 39,325 | Jul. 21, 1863 | S. Perry | Improvement in horse-powers |
 | 69,243 | Sep. 24, 1867 | S. Perry | Improvement in chain-wheels for chain horse-power |
 | 122,488 | Jan. 02, 1872 | S. Perry | Improvement in horse-power jacks |
| 210,747 | Dec. 10, 1878 | L. Bronson | Thrashing Machine |