| All Patents in class 407/20 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
| | 153,370 | Jul. 21, 1874 | J.A. Peer | Gear Cutting Machines |
| | 234,635 | Nov. 16, 1880 | L. Wenchel | Apparatus for Turning Cutters for Molding Machines |
| | 316,784 | Apr. 28, 1885 | R.M. Hill | Gear Cutter Shaping Tool |
 | 392,597 | Nov. 13, 1888 | T. Eynon | Cutting-tool for milling and gear-cutting machines |
 | 490,638 | Jan. 31, 1893 | R.M. Clough | Duplex Gear Cutter |
 | 616,649 | Dec. 27, 1898 | O.J. Beale | Device for generating gear-teeth |
| | 643,991 | Feb. 20, 1900 | G.B. Taylor | Machine for Cutting Spiral End Helical Teeth in Chuck Jaws |
| | 1,258,859 | Mar. 12, 1918 | A. Benson | Gear Cutter |
| | 1,480,610 | Jan. 15, 1924 | J. Harten | Gear Cutter |
| | 2,135,819 | Nov. 08, 1938 | P.T. Klix | Adjustable Chamfering Tool and Holder |
