Patents for B. P. Grinnell


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