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| All Patents in class 266/126 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,461,734 | Feb. 15, 1949 | A.L. Hartley, A.H. Davis | Flame hardening apparatus | flame hardening machines | |
| 2,500,989 | Mar. 21, 1950 | A.L. Hartley, W.D. Whalen, A.H. Davis | Metallurgical apparatus | flame hardening machines | |