| All Patents in class 407/20 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 153,370 | Jul. 21, 1874 | J.A. Peer | Gear Cutting Machines | gear making machines |
| 234,635 | Nov. 16, 1880 | L. Wenchel | Apparatus for Turning Cutters for Molding Machines | metal lathe accessories and attachments |
| 316,784 | Apr. 28, 1885 | R.M. Hill | Gear Cutter Shaping Tool | lathe tools |
| 392,597 | Nov. 13, 1888 | T. Eynon | Cutting-tool for milling and gear-cutting machines | milling machine cutters |
| 490,638 | Jan. 31, 1893 | R.M. Clough | Duplex Gear Cutter | gear cutting tools |
| 616,649 | Dec. 27, 1898 | O.J. Beale | Device for generating gear-teeth | gear making machines |
| 643,991 | Feb. 20, 1900 | G.B. Taylor | Machine for Cutting Spiral End Helical Teeth in Chuck Jaws | gear making machines |
| 1,258,859 | Mar. 12, 1918 | A. Benson | Gear Cutter | gear making machines |
| 1,480,610 | Jan. 15, 1924 | J. Harten | Gear Cutter | gear cutting tools |
| 2,135,819 | Nov. 08, 1938 | P.T. Klix | Adjustable Chamfering Tool and Holder | metalworking machine tool holders |
| 2,167,146 | Jul. 25, 1939 | J.D. Rovick, J.C. Drader | Means for Finishing Gears | gear cutting tools |
| 2,305,144 | Dec. 15, 1942 | W.F. Dalzen | Cutting Tool | gear cutting tools |
| 2,374,890 | May 01, 1945 | H. Pelphrey | Geat Cutter | gear cutting tools |
| 2,962,799 | Dec. 06, 1960 | A.D. Moncrieff | Gear Cutting Device | gear making machines |
| 3,243,863 | Apr. 05, 1966 | W.R. Carlsen | Cutting Tool | gear cutting tools |
