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Patents for Portage Double-Quick, Inc.
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	2,915,949	Dec. 08, 1959	R.E. Novkov	End mill driving attachment
	2,931,659	Apr. 05, 1960	R.E. Novkov	Quick Change Tool Holder
	2,960,013	Nov. 15, 1960	R.E. Novkov	Offsetting attachment for rotating spindle

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