| All Patents in class 409/44 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
 | 605,983 | Jun. 21, 1898 | H.C. Warren | Gear-tooth-generating machines |
 | 1,197,376 | Sep. 05, 1916 | L. Iversen | Gear-planing machine |
 | 1,477,562 | Dec. 18, 1923 | R.L. Hibbard, F.W. Wappat | Gear cutting |
| | 1,489,381 | Apr. 08, 1924 | C. Barth | Bevel Wheel Gear Shaper |
 | 1,656,633 | Jan. 17, 1928 | L.O. Carlsen, E. Finsen, E.C. Head | Gear-cutting machine |
 | 1,660,502 | Feb. 28, 1928 | J.E. Gleason, G.H. Bryan, E. Finsen, A.P. Slade | Method and apparatus for making gears |
 | 2,101,237 | Dec. 07, 1937 | L.O. Carlsen | Machine for producing gears |
| | 4,534,684 | Aug. 13, 1985 | B.H. Johnson | Apparatus For Milling A Gear For A Double Enveloping Worm Gear Drive |
