| All Patents in class 409/335 |
Patents 1 -
10
of 27
      |
| Picture | Number | Date | Patentee | Title |
| | 77,225 | Apr. 28, 1868 | R.S. Eddy, W.H. Smith | Shaping Key-Seats |
| | 286,221 | Oct. 09, 1883 | S.B. Pierce | Machine for Cutting Key Seats |
| | 299,496 | May 27, 1884 | J. Richards | Metal Boring and Slotting Machine |
| | 325,695 | Sep. 08, 1885 | D.W. Porter | Key Seating Machine |
| | 367,782 | Aug. 09, 1887 | F.H. Brown | Convertable Machine for Slotting or Drilling |
| | 373,680 | Nov. 22, 1887 | M. Morton | Key and Key Seat Cutter |
| | 389,243 | Sep. 11, 1888 | J.E. Palethorp, R.A. Palmer | Key Seat Cutting Machine |
 | 390,306 | Oct. 02, 1888 | M. Morton | Portable Key Seat Cutter |
| | 416,479 | Dec. 03, 1889 | G.W. Marshall | Combined Key Seat and Key Cutting Machine |
 | 453,653 | Jun. 09, 1891 | M. Morton | Combined Portable Planer and Key Seat Machine |
