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Patents for John Sprogell
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
301,119	Jul. 01, 1884	J. Sprogell, H.S. Haskins	Overhead railway	hoists, winches, come-alongs
301,177	Jul. 01, 1884	J. Sprogell, H.S. Haskins	Overhead railway	hoists, winches, come-alongs

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