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All Patents of Type: heat treating machines
Patents 1 - 2 of 2
First set of recordsLast set of records
1,265,944May 14, 1918C. NapierProcess of and Apparatus for Heat Treatment of Metal Objectsheat treating machines
2,220,002Oct. 29, 1940H.M. Binns, W.A. Maddox, M. RollmanHeat Treatingheat treating machines
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