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All Patents in class 222/134
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,510,439	Sep. 30, 1924	E.R. Draver	Transmission mechanism for feeders connected in a gang
	1,521,014	Dec. 30, 1924	E.R. Draver	Regulating device for percentage feeders

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