| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Albert L. Hartley | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
| 2,245,273 | Jun. 10, 1941 | A.L. Hartley | Method of Flame Hardening Lathe Beds | ||
 | 2,247,494 | Jul. 01, 1941 | A.L. Hartley | Flame hardening apparatus | |
 | 2,257,605 | Sep. 30, 1941 | A.L. Hartley | Adjustable flame hardening torch | |
| 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 | |
 | 2,500,989 | Mar. 21, 1950 | W.D. Whalen, A.H. Davis, A.L. Hartley | Metallurgical apparatus | |