| Patents for A. W. Gray's Sons |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 2,833 | Oct. 26, 1842 | A.W. Gray | Endless-chain horse-power |
 | 4,525 | May 16, 1846 | A.W. Gray | Wrought-nail machinery |
 | 15,693 | Sep. 09, 1856 | A.W. Gray | Link of horse-powers |
 | RE1,322 | Jul. 01, 1862 | A.W. Gray | Improvement in horse-powers |
 | 133,773 | Dec. 10, 1872 | A.W. Gray | Improvement in machines for corrugating metal plates |
 | 141,268 | Jul. 29, 1873 | A.W. Gray | Improvement in links of endless chains for horse-powers |
 | 157,990 | Dec. 22, 1874 | A.W. Gray | Improvement in bolt or rod cutters |
 | 166,456 | Aug. 10, 1875 | A.W. Gray | Improvement in grain-separators |
 | 227,765 | May 18, 1880 | A.Y. Gray, L. Gray | Wrench |
 | CA-12,020 | Nov. 24, 1880 | A.Y. Gray, L. Gray | Improvements on Threshing Machines |
