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Patents for Harry R. Illingworth
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	334,778	Jan. 26, 1886	H.R. Illingworth, J.J. Illingworth	Steam Engine Recorder
	334,779	Jan. 26, 1886	H.R. Illingworth, J.J. Illingworth	Steam Engine Recorder

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