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Patents for Chicago Mortising Machine Co.
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	363,123	May 17, 1887	C.H. Douglas	Chain cutter for mortising-machines
	374,946	Dec. 20, 1887	C.H. Douglas	Chain mortising machine
	379,566	Mar. 20, 1888	C.H. Douglas	Chain mortising machine

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