| Patents for George G. Sill |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 12,002 | Nov. 28, 1854 | E.K. Root | Improved machine for boring the chambers in the cylinders of fire-arms | drilling and boring |
| 12,874 | May 15, 1855 | E.K. Root | Slide Lathe | engine lathes |
| 41,571 | Feb. 09, 1864 | A.F. Cushman | Improvement in Box Planes or Scrapers | box scrapers |
| 106,919 | Aug. 30, 1870 | A.F. Cushman | Improvement in Hollow Augers | hollow bits |
| 121,494 | Dec. 05, 1871 | A.F. Cushman | Improvements in Chucks for Metal-Turning Lathes | metal lathe chucks |
| 129,349 | Jul. 16, 1872 | E.C. Kellogg | Calipers For Taper Surfaces | measurement gauges |
