| All Patents in class 409/305 |
Patents 1 -
15
of 16
      |
| 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 |
| 50,997 | Nov. 14, 1865 | W. Weild | Machine for Making Fluted Rollers | metal planers |
| 150,918 | May 12, 1874 | A. Whitcomb | Improvement in machines for making eaves-troughs | specialty woodworking machines |
| 259,043 | Jun. 06, 1882 | E. Reynolds | Machine for Cutting Spiral Grooves in Grinding Rolls | metal planers |
| 286,466 | Oct. 09, 1883 | F. Messer | Machine for Dressing Rollers for Grinding Mills | metalworking machines |
| 289,556 | Dec. 04, 1883 | E. Rein | Device for Grinding and Grooving Mill Rollers | metalworking machines |
| 328,075 | Oct. 13, 1885 | P.T. Smith | Machine for Grooving Grinding Cylinders | metal planers |
| 331,613 | Dec. 01, 1885 | W.H. Campbell, C.B. Campbell | Machine for Gooving Metal Rolls | metal planers |
| 334,262 | Jan. 12, 1886 | F. Messer | Machine for Dressing Grinding Rolls | metalworking machines |
| 369,239 | Aug. 30, 1887 | G.J. Fritz | Machine for Corrugating Metal Rollers | metal planers |
| 436,078 | Sep. 09, 1890 | W. Evans | Screw Cutting Attachment | metal planer accessories |
| 504,172 | Aug. 29, 1893 | J. Johnson, F.A. Pratt | Roll Grooving Machine | metal planers |
| 1,343,554 | Jun. 15, 1920 | W.F. Fischer | Machine for Forming Grooves | oil grooving machines |
| 1,675,136 | Jun. 26, 1928 | E.P. Sacrey | Machine for Cutting Oil Grooves | oil grooving machines |
| 3,143,923 | Aug. 11, 1964 | E. Krzyszczuk | Turbine Blade Cutting Tool Attachment | milling machine accessories |
