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Patents for Frederick K. Zwald
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	3,742,565	Jul. 03, 1973	R.B. Baldwin, F.K. Zwald, C.E. Boboltz	Rotary cutter
	3,776,289	Dec. 04, 1973	R.B. Baldwin, F.K. Zwald, C.E. Boboltz	Cutting tool holder

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