| All Patents in class 409/1 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 67,219 | Jul. 30, 1867 | T.B. Russell | Improvements in Gear-Cutting Wheels | gear making machines |
| 107,903 | Oct. 04, 1870 | J.L. Hathaway | Finishing Watch Wheels | gear making machines |
| 510,121 | Dec. 05, 1893 | H.E. Eberhardt, F.L. Eberhardt, U. Eberhardt | Gear-cutting machine | gear making machines |
| 638,562 | Dec. 05, 1899 | J.S. Copeland | Gear Cutting Machine | gear making machines |
| 868,159 | Oct. 15, 1907 | T. Coventry | Bevel Wheel Shaping Machine | gear making machines |
| 905,084 | Nov. 24, 1908 | E.J. Lees | Cutter Head for Gear Cutting Machines | gear making machines |
| 1,192,450 | Jul. 25, 1916 | S.S. Cook, A.Q. Carnegie, C.A. Parsons | Gear Cutting Machine | gear making machines |
| 1,262,192 | Apr. 09, 1918 | E.C. Head | Method of Producing Gears | gear making machines |
| 1,686,523 | Oct. 09, 1928 | E.C. Head | Machine for producing gears | gear making machines |
| 2,049,492 | Aug. 04, 1936 | H.Q. Munn, J.C. Drader | Method of Machining Bevel Gears | gear cutting tools |
| 2,940,365 | Jun. 14, 1960 | J.C. Drader | Control Apparatus | machine tool controls |
| 3,521,524 | Jul. 21, 1970 | R.A. Wassdorp, E.J. Hunkeler | Control Apparatus for Checking and Controlling Sequential Machine Operations | machine tool controls |
