| Patents for Albert L. Hartley |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 2,245,273 | Jun. 10, 1941 | A.L. Hartley | Method of Flame Hardening Lathe Beds | metal lathes |
| 2,247,494 | Jul. 01, 1941 | A.L. Hartley | Flame hardening apparatus | flame hardening machines |
| 2,257,605 | Sep. 30, 1941 | A.L. Hartley | Adjustable flame hardening torch | flame hardening machines |
| 2,412,333 | Dec. 10, 1946 | A.L. Hartley | Flame Hardening Apparatus | metalworking machines |
| 2,461,734 | Feb. 15, 1949 | A.L. Hartley, A.H. Davis | Flame hardening apparatus | flame hardening machines |
| 2,500,989 | Mar. 21, 1950 | W.D. Whalen, A.H. Davis, A.L. Hartley | Metallurgical apparatus | flame hardening machines |
