| All Patents in class 409/304 |
Patents 1 -
15
of 35
      |
| Number | Date | Patentee | Title | Type |
| 1,458 | Dec. 31, 1839 | T.J. Butler | Mode of Cutting Seats, Slots, or Grooves for the Reception of Keys in the Hubs and Axles of Car-Wheels and in other Machinery | key seating machines |
| 72,218 | Dec. 17, 1867 | J.W. Moore | Slotting Machine | metal slotting machines |
| 77,225 | Apr. 28, 1868 | R.S. Eddy, W.H. Smith | Shaping Key-Seats | key seating machines |
| 131,293 | Sep. 10, 1872 | L.M. Mooney | Improvement in Key-Seat Cutters | key seating machines |
| 141,049 | Jul. 22, 1873 | R. Harper | Metal Planing Machines | metal planers |
| 208,492 | Oct. 01, 1878 | J.W. Post | Key-Seat or Pinion Cutter | key seating machines |
| 249,382 | Nov. 08, 1881 | C. Moore | Machine for Grooving Metal Rolls | metal shapers |
| 256,165 | Apr. 11, 1882 | J.R. Reynolds | Machine for Cutting Grooves in Rolls | metal planer accessories |
| 265,976 | Oct. 17, 1882 | W.T. Nicholson | Machine for Forming Teeth Upon File-Blanks | tool making machines |
| 274,287 | Mar. 20, 1883 | W.P. Davis | Key Seat Cutting Machine | key seating machines |
| 286,221 | Oct. 09, 1883 | S.B. Pierce | Machine for Cutting Key Seats | key seating machines |
| 340,348 | Apr. 20, 1886 | J.L. Oefinger | Machine for Cutting Key Ways | key seating machines |
| 345,668 | Jul. 20, 1886 | G.F. Buss | Dadoing-machine | dado machines |
| 355,562 | Jan. 04, 1887 | A. Schwitter | Rose Engine | ornamental lathes |
| 373,680 | Nov. 22, 1887 | M. Morton | Key and Key Seat Cutter | key seating machines |
