| All Patents in class 409/3 |
Patents 16 -
22
of 22
      |
| Number | Date | Patentee | Title | Type |
| 1,063,160 | May 27, 1913 | B.M. Hanson | Forming Machine | milling machines |
| 1,108,629 | Aug. 25, 1914 | W. Seidel | Machine for Forming Wooden Gear Teeth | specialty woodworking machines |
| 1,143,498 | Jun. 15, 1915 | J. Buck | Machine for Cutting Miter and Bevel Gear Wheels | gear making machines |
| 1,173,914 | Feb. 29, 1916 | T. Coventry, W. Anderson | Gear Cutting Machine | gear making machines |
| 2,367,100 | Jan. 09, 1945 | O. Cullman, L.H. Hornbrook, N.B. Wienke | Sprocket milling machine | |
| 2,392,819 | Jan. 15, 1946 | S.G. Brady, I.J. Gruenberg | Gear Grinding Machine | gear grinding machines |
| 2,622,484 | Dec. 23, 1952 | D.M. Birrell | Worm Gear Cutting Attachment for Milling Machines | milling machine accessories |
