| All Patents in class 74/816 |
Patents 1 -
10
of 33
      |
| Picture | Number | Date | Patentee | Title |
 | 110,406 | Dec. 20, 1870 | C. Van Haagen | Improvement in gear-cutting machines |
 | 136,450 | Mar. 04, 1873 | I.F. Murch | Multiple Bit Device |
| | 144,214 | Nov. 04, 1873 | T.O. Mills | Gear Cutting Attachments to Lathes |
| | 156,705 | Nov. 10, 1874 | W.P. Hopkins | Gear Cutting Attachments for Lathes |
| | 174,596 | Mar. 07, 1876 | C. Walker | Gear Cutting Attachment for Metal Lathe |
| | 208,491 | Oct. 01, 1878 | J.W. Post | Gear Cutting Attachment for Lathes |
| | 276,346 | Apr. 24, 1883 | W. Scully, J. Brooks | Gear Cutter |
 | 343,980 | Jun. 22, 1886 | A.H. Brainard | Dividing Engine |
| | 359,377 | Mar. 15, 1887 | G.F. Ballou | Gear Cutting Device for Lathes |
| | 431,809 | Jul. 08, 1890 | J. Hartness | Attachment for Metal Screw Machines |
