| All Patents in class 266/121 |
Patents 1 -
10
of 10
      |
| Picture | Number | Date | Patentee | Title |
| | 2,220,002 | Oct. 29, 1940 | H.M. Binns, W.A. Maddox, M. Rollman | Heat Treating |
 | 2,264,752 | Dec. 02, 1941 | W.F. Groene | Flame Hardening Machine |
| | 2,294,187 | Aug. 25, 1942 | T.A. Waltz, A. Kullman | Apparatus for Heat Treating |
| | 2,346,923 | Apr. 18, 1944 | T.A. Waltz, A. Kullman | Apparatus for Flame Hardening Racks and the Like |
| | 2,412,333 | Dec. 10, 1946 | A.L. Hartley | Flame Hardening Apparatus |
 | 2,461,734 | Feb. 15, 1949 | A.L. Hartley, A.H. Davis | Flame hardening apparatus |
| | 2,523,883 | Sep. 26, 1950 | M. Garvin, D.M. Strauchen | Heat Treating Machine |
| | 2,555,517 | Jun. 05, 1951 | M. Garvin, D.M. Strauchen | Automatic Heat Treating Machine |
| | 2,665,126 | Jan. 05, 1954 | E.G. Roehm | Crankshaft Pin Hardening Machine |
| | 2,956,793 | Oct. 18, 1960 | R.S. Easley | Rotary Fluid Cooled Flame Head for Flame Hardening Machine |
