| All Patents in class 409/57 |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 23,484 | Apr. 05, 1859 | W. Obenchain | Machine for Making Wooden Patterns for Cog-Wheels, &c. | carving machines |
| 153,370 | Jul. 21, 1874 | J.A. Peer | Gear Cutting Machines | gear making machines |
| 320,179 | Jun. 16, 1885 | H. Schulze-Berge | Gear Cutter | gear making machines |
| 326,889 | Sep. 22, 1885 | D. Slate | Gear-Cutter | gear making machines |
| 532,127 | Jan. 08, 1895 | L.E. Whiton | Gear-cutting machine | gear making machines |
| 605,249 | Jun. 07, 1898 | J.E. Gleason | Machine for forming gear-teeth | gear making machines |
| 607,626 | Jul. 19, 1898 | M. Reece, administrator, F.A. Shea, Administrator, J. Reece, Estate of (deceased) | Machine for Cutting Worms | gear making machines |
| 621,519 | Mar. 21, 1899 | W.G. Burnham | Gear-cutting machine | gear making machines |
| 624,676 | May 09, 1899 | E.H. Parks | Gear-cutting machine | gear making machines |
| 642,667 | Feb. 06, 1900 | O.J. Beale | Mechanical Movement | metalworking machine mechanisms |
| 700,184 | May 20, 1902 | H.F. Emme, F.L. Eberhardt | Gear-cutting engine | gear making machines |
| 744,110 | Nov. 17, 1903 | C.D. Rice | Gear Cutting Machine | gear making machines |
| 750,485 | Jan. 26, 1904 | J. Parker | Gear Cutting Machine | gear making machines |
| 766,245 | Aug. 02, 1904 | F. Hardinge | Automatic gear cutting machine | gear making machines |
| 789,860 | May 16, 1905 | W.F. Groene, R.K. Blond | Milling-machine | milling machines |
