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Patents for James Frost
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	22,264	Dec. 07, 1858	J. First	Improvement in sewing-machines
	29,035	Jul. 03, 1860	J. First	Improvement in sewing-machines
	30,138	Sep. 25, 1860	G. Frost	Cut-off valve for steam-engines

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