| All Patents in class 266/125 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 2,247,494 | Jul. 01, 1941 | A.L. Hartley | Flame hardening apparatus | flame hardening machines |
| 2,264,752 | Dec. 02, 1941 | W.F. Groene | Flame Hardening Machine | metalworking machines |
| 2,294,187 | Aug. 25, 1942 | T.A. Waltz, A. Kullman | Apparatus for Heat Treating | heat treating machines |
| 2,378,890 | Jun. 26, 1945 | H.H. Brown, P.A. Abe, M.A. Crosby | Surface Hardening Metal Areas of Limited Size | metal hardening |
| 2,523,883 | Sep. 26, 1950 | M. Garvin, D.M. Strauchen | Heat Treating Machine | heat treating machines |
| 2,555,517 | Jun. 05, 1951 | M. Garvin, D.M. Strauchen | Automatic Heat Treating Machine | heat treating machines |
| 2,665,126 | Jan. 05, 1954 | E.G. Roehm | Crankshaft Pin Hardening Machine | flame hardening machines |
