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Patents for F. H. McNaught
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	CA-141,815	Jul. 23, 1912	M.W. Downie	Combination track gauge and recorder
	1,066,188	Jul. 01, 1913	M.W. Downie	Combination track gauge and recorder

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