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Patents for Alfred Holmes
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	221,479	Nov. 11, 1879	F.N. Trevor, W.W. Trevor	Junction Service-Boxes for Street Steam Mains
	221,480	Nov. 11, 1879	W.W. Trevor	Machine for Cutting Key-Seats

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