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| All Patents in class 318/484 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,228,515 | Jan. 14, 1941 | A.K. Foulds | Control Device | temperature controls | |
| 2,555,517 | Jun. 05, 1951 | M. Garvin, D.M. Strauchen | Automatic Heat Treating Machine | heat treating machines | |