Patents for Frederick D. Butterfield


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Patents for Frederick D. Butterfield
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
320,693	Jun. 23, 1885	G.L. Reece	Screw-plate	taps and dies
CA-21,981	Jul. 03, 1885	G.L. Reece	Screw plate	taps and dies