All Patents in class 431/280


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All Patents in class 431/280
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	397,903	Feb. 19, 1889	W.F. Folmer	Illuminating Apparatus
	2,257,605	Sep. 30, 1941	A.L. Hartley	Adjustable flame hardening torch