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All Patents in class 191/93
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	476,028	May 31, 1892	M.A. Yeakley	Safety attachment for railway-trolleys
	1,143,874	Jun. 22, 1915	M.A. Yeakley	Trolley retriever or safety device

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