| Patents for J. B. Woodruff |
Patents 1 -
10
of 10
      |
| Picture | Number | Date | Patentee | Title |
 | 39,675 | Aug. 25, 1863 | J.B. Ripsom | Improved Hub-Machine |
 | 42,011 | Mar. 22, 1864 | W. Morton | Improvement in Drilling Machines |
 | 58,313 | Sep. 25, 1866 | W.B. Soumeillian | Attachment for the Legs of Billiard-Tables |
 | 64,798 | May 14, 1867 | M.C. Remington | Barley Fork |
 | 81,475 | Aug. 25, 1868 | W.G. Bulgin | Improvement in machines for sawing lath |
 | 100,722 | Mar. 15, 1870 | J.H. Butler | Improvement in machine for sawing lath |
 | 137,583 | Apr. 08, 1873 | B.D. Whitney | Improvement in band sawing-machines |
| | 147,535 | Feb. 17, 1874 | B.D. Whitney | Improvement in circular files |
| | 147,536 | Feb. 17, 1874 | B.D. Whitney | Improvement in sharpening-machines |
 | 165,662 | Jul. 20, 1875 | J. Du Bois | Improvement in spark-arresters |
