| All Patents in class 409/3 |
Patents 1 -
15
of 22
      |
| Number | Date | Patentee | Title | Type |
| 152,400 | Jun. 23, 1874 | N.T. Y Mirapeix | Gear-Cutting Machine | gear making machines |
| 155,026 | Sep. 15, 1874 | G.M. Holmes | Gear-Cutting Machines | gear making machines |
| 190,470 | May 08, 1877 | G.H. Corliss | Gear-Cutting Machine | gear making machines |
| RE9,468 | Nov. 16, 1880 | W. Gleason | Machine for Cutting the Teeth of Metal Gears | gear making machines |
| 301,891 | Jul. 15, 1884 | R.S. Eastman, F. Higgins | Gear Cutting Machine | gear making machines |
| 412,023 | Oct. 01, 1889 | T.C. Dill | Key Seating Machine | key seating machines |
| 468,072 | Feb. 02, 1892 | M. Morton | Key Seat Cutting Machine | key seating machines |
| 492,966 | Mar. 07, 1893 | G.H. Nutt | Machine for Cutting Worms for Gearing | milling machines |
| 528,025 | Oct. 23, 1894 | T.O. Perry | Gear Cutting Machine | gear making machines |
| 611,851 | Oct. 04, 1898 | N.A. Wheeler | Gear Cutting Machine | gear making machines |
| 770,381 | Sep. 20, 1904 | S. McMillen | Mechanism for Turning Wrist Pins, &c. | wrist pin lathes |
| 892,442 | Jul. 07, 1908 | J.F. Mill | Gear Cutting Apparatus | gear making machines |
| 926,989 | Jul. 06, 1909 | H. Lehmann | Machine for Producing Gear Wheels According to Pattern | gear making machines |
| 980,232 | Jan. 03, 1911 | A.F. Cooke, T. Fawcus | Gear Cutting Machine | gear making machines |
| 1,040,137 | Oct. 01, 1912 | E.H. Browning | Machine for Cutting Bevel Gears | gear making machines |
