Patents for John J. Tighe


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Patents for John J. Tighe
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	756,725	Apr. 05, 1904	H.S. Spencer	Hollow-chisel mortising-machine
	767,504	Aug. 16, 1904	H.S. Spencer	Mortising-machine