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Patents for Donald J. Cayen
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	3,988,965	Nov. 02, 1976	R.V. Fatke, O.W. Ehrhardt, D.J. Cayen	Two Pressure Counterbalance System for Machine Tool Headstocks
	4,303,360	Dec. 01, 1981	J.T. Janeczko, D.J. Cayen	Power Drawfinger System for Machine Tool Spindle

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