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Patents for W. A. Bertram
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	191,111	May 22, 1877	E. Cather	Improvement in machines for compressing the ends of blind-slats
	218,002	Jul. 29, 1879	H. Ducsh	Metal-Drilling Machine
	231,525	Aug. 24, 1880	W.H. Bateman, F.X. Hooper	Printer's galley
	252,313	Jan. 17, 1882	G. Grill	Guard for variety molding-machines
	261,090	Jul. 11, 1882	G. Grill	Circular-saw guard

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