| All Patents in class 409/307 |
Patents 1 -
10
of 33
      |
| Picture | Number | Date | Patentee | Title |
 | 10,873 | May 02, 1854 | P. Williams, II | Slotting Machine |
| | 46,758 | Mar. 07, 1865 | J.C. Morgan | Shaping Key-Seats |
| | 67,520 | Aug. 06, 1867 | D. Flynn | Shaping and Slotting Key-Seats |
 | 132,239 | Oct. 15, 1872 | T.R. Bailey | Improvement in Key-Seat Cutting-Machines |
| | 134,857 | Jan. 14, 1873 | J.H. Cranston | Slotting and Keyseat Machines |
 | 221,480 | Nov. 11, 1879 | W.W. Trevor | Machine for Cutting Key-Seats |
| | 289,060 | Nov. 27, 1883 | G.W. Bonds | Key Seat Cutting Machine |
| | 303,178 | Aug. 05, 1884 | M. Morton | Combined Key Seat and Gear Cutting Machine |
| | 309,066 | Dec. 09, 1884 | C.A. Lamphere | Key Seat Cutter |
| | 325,695 | Sep. 08, 1885 | D.W. Porter | Key Seating Machine |
