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Patents for Simeon Duck
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	CA-4,879	Jun. 18, 1875	S. Duck	Mortising machine
	171,360	Dec. 21, 1875	S. Duck	Improvement in mortising-machines
	197,111	Nov. 13, 1877	S. Duck	Improvement in mortising-machines

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