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Patents for David W. Robb
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	755,046	Mar. 22, 1904	D.W. Robb	Steam Boiler
	1,120,071	Dec. 08, 1914	J.W. MacDonald, D.W. Robb	Steam-boiler construction

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