Patents for Gardner B. Chapin


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Patents for Gardner B. Chapin
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	161,995	Apr. 13, 1875	D.L. Toppan	Improvement in planing-machines
	163,342	May 18, 1875	D.L. Toppan	Improvement in drill for drilling metal