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Patents for John F. Doolittle
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	217,570	Jul. 15, 1879	J.F. Doolittle, J. Aitchison	Boiler Flue Cleaner
	541,785	Jun. 25, 1895	J.F. Doolittle	Steam Hammer

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