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All Patents in class 239/552
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
367,945	Aug. 09, 1887	C.M. Young	Burner for Natural Gas	fuel burners
2,621,717	Dec. 16, 1952	M. Garvin, D.M. Strauchen	Annular Torch Head for Flame Hardening Machines	flame hardening machines

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