Patents for B. P. Grinnell


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Patents for B. P. Grinnell
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	4,692X	Mar. 03, 1827	B.P. Grinnell, H.P. Babbit, S. Davis	Making watch seals
	4,700X	Mar. 07, 1827	J. Rainey	Spring hammer for blacksmiths