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All Patents in class 425/579
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,849,027	Mar. 08, 1932	R.J. Pardee	Briquetting machine
	2,810,181	Oct. 22, 1957	K. Ruckstuhl	Extrusion press
	RE24,665	Jul. 07, 1959	K. Ruckstuhl	Extrusion press

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