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Patents for Einar O. Engerbretsen
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	3,734,009	May 22, 1973	E.O. Engerbretsen	Compactor and drive assembly
	3,757,683	Sep. 11, 1973	E.O. Engerbretsen, E. Grunewald	Compactor drive chain tensioning apparatus

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