| Patents for Theodore G. Ellis |
Patents 16 -
30
of 35
      |
| Number | Date | Patentee | Title | Type |
| 210,875 | Dec. 17, 1878 | E.S. Pierce | Three-jaw scroll chuck with conical volute | |
| 215,039 | May 06, 1879 | C.E. Billings | Tap Wrench | tap wrenches and die stocks |
| 216,766 | Jun. 24, 1879 | J.N. Skinner | Improvement in lathe-chucks | metal lathe chucks |
| 224,119 | Feb. 03, 1880 | D.E. Whiton | Scroll-chuck | metal lathe chucks |
| 231,607 | Aug. 24, 1880 | E.G. Parkhurst | Machine-gun | firearms |
| 241,236 | May 10, 1881 | F.A. Pratt | Adjustable lever | cranes |
| 241,563 | May 17, 1881 | F.A. Pratt | Metal-planing machine | metal planers |
| 243,806 | Jul. 05, 1881 | D. Slate | Drill-chuck | drill chucks |
| 248,587 | Oct. 25, 1881 | W. Gray | Device for Throwing Belts Onto or Off From Revolving Pulleys | belt shifters |
| 255,039 | Mar. 14, 1882 | J.N. Skinner | Lathe-chuck | metal lathe chucks |
| 256,127 | Apr. 11, 1882 | A.S. Cook | Wood-screw machine | screw machines |
| 256,546 | Apr. 18, 1882 | A.S. Cook | Wood-screw machine | screw machines |
| 256,668 | Apr. 18, 1882 | F.N. Gardner | Cutter Holder for Lathes | lathe tool holders and tool posts |
| 259,040 | Jun. 06, 1882 | E.G. Parkhurst | Ammunition-box | |
| 261,901 | Aug. 01, 1882 | C.E. Billings | Surface Gage | surface gauges |
