| All Patents in class 409/304 |
Patents 16 -
30
of 35
      |
| Number | Date | Patentee | Title | Type |
| 385,818 | Jul. 10, 1888 | A.J. Moxham | Process of Straightening Slot Rails | metalworking machine mechanisms |
| 389,243 | Sep. 11, 1888 | J.E. Palethorp, R.A. Palmer | Key Seat Cutting Machine | key seating machines |
| 453,653 | Jun. 09, 1891 | M. Morton | Combined Portable Planer and Key Seat Machine | key seating machines |
| 468,702 | Feb. 09, 1892 | G.H. Smith | Horseshoe Groover | horseshoes |
| 489,304 | Jan. 03, 1893 | G.F. Grotz | Machine for Cutting Key Ways | key seating machines |
| 508,982 | Nov. 21, 1893 | W.C. Rolston | Channel Cutting Tool for Planing Machines | metal planer tools |
| 566,596 | Aug. 25, 1896 | J.D. Perkins, J.M. Malone | Stone Dressing Machine | stone dressing machines |
| 757,562 | Apr. 19, 1904 | H.E. Morton, M. Morton | Slotting Machine | metal slotting machines |
| 823,354 | Jun. 12, 1906 | C.C. Newton | Slotting Machine | metal slotting machines |
| 1,333,210 | Mar. 09, 1920 | E.N. Moor | Interior Slotting Attachment for Lathes | metal lathe accessories and attachments |
| 1,514,842 | Nov. 11, 1924 | A.L. Evans | Cutting Tool | metal planer tools |
| 1,935,484 | Nov. 14, 1933 | F.L. Re Qua | Portable Shaper | track maintenance machinery |
| 1,958,705 | May 15, 1934 | W.F. Klein | Apparatus for Thin Wall Broaching | |
| 2,123,788 | Jul. 12, 1938 | D.A. McNaughton | Key Seating Attachment for Lathes | metal lathe accessories and attachments |
| 2,224,531 | Dec. 10, 1940 | H.H. Winegar | Metalworking Attachment for Lathes | metal lathe accessories and attachments |
